FC20 hp3050 scanning problem

Hi Paul Erickson,

HPLIP-3.14.3 is supports Fedora 20, please install from http://hplipopensource.com/hplip-web/install.html

If problem still exists, provide us following command output

$ hp-check
$ find /usr/ -name libsane-hpaio.so
$ find /usr/ -name libsane.so

Thanks & Regards,
Amarnath

That took care of it. Works fine now. Thanks very much.

Scanning seems to be broken again in HPLIP-3.14.6 with Fedora 20.

[paul@paul Desktop]$ hp-check
Saving output in log file: /home/paul/Desktop/hp-check.log

HP Linux Imaging and Printing System (ver. 3.14.6)
Dependency/Version Check Utility ver. 15.1

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

Note: hp-check can be run in three modes:
1. Compile-time check mode (-c or --compile): Use this mode before compiling the
HPLIP supplied tarball (.tar.gz or .run) to determine if the proper dependencies
are installed to successfully compile HPLIP.
2. Run-time check mode (-r or --run): Use this mode to determine if a distro
supplied package (.deb, .rpm, etc) or an already built HPLIP supplied tarball
has the proper dependencies installed to successfully run.
3. Both compile- and run-time check mode (-b or --both) (Default): This mode
will check both of the above cases (both compile- and run-time dependencies).

Check types:
a. EXTERNALDEP - External Dependencies
b. GENERALDEP - General Dependencies (required both at compile and run time)
c. COMPILEDEP - Compile time Dependencies
d. [All are run-time checks]
PYEXT SCANCONF QUEUES PERMISSION

Status Types:
    OK
    MISSING - Missing Dependency or Permission or Plug-in
    INCOMPAT - Incompatible dependency-version or Plugin-version

---------------
| SYSTEM INFO |
---------------

 Kernel: 3.14.8-200.fc20.x86_64 #1 SMP Mon Jun 16 21:57:53 UTC 2014 GNU/Linux
 Host: paul
 Proc: 3.14.8-200.fc20.x86_64 #1 SMP Mon Jun 16 21:57:53 UTC 2014 GNU/Linux
 Distribution: fedora 20
 Bitness: 64 bit

-----------------------
| HPLIP CONFIGURATION |
-----------------------

HPLIP-Version: HPLIP 3.14.6
HPLIP-Home: /usr/share/hplip
HPLIP-Installation: Auto installation is supported for fedora distro 20 version

Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.

[hplip]
version=3.14.6

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/cups/model/HP
ppdbase=/usr/share/cups/model
doc=/usr/share/doc/hplip-3.14.6
html=/usr/share/doc/hplip-3.14.6
icon=/usr/share/applications
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv/hp
bin=/usr/bin

# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
libusb01-build=no
pp-build=no
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
hpijs-install=no
foomatic-drv-install=no
foomatic-ppd-install=no
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=no
internal-tag=3.14.6
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=no
lite-build=no
udev_sysfs_rules=no
hpcups-only-build=no
hpijs-only-build=no

Current contents of '/var/lib/hp/hplip.state' file:
Plugins are not installed. Could not access file: No such file or directory

Current contents of '~/.hplip/hplip.conf' file:
[upgrade]
notify_upgrade = true
last_upgraded_time = 1402413465
pending_upgrade_time = 0
latest_available_version = 3.14.6

[settings]
systray_visible = 0
systray_messages = 0

[last_used]
device_uri = hp:/net/hp_LaserJet_1300?ip=192.168.1.113
printer_name = HP-LaserJet-Professional-P1102w
working_dir = .

[commands]
scan = /usr/bin/xsane -V %SANE_URI%

[refresh]
rate = 30
enable = false
type = 1

[polling]
enable = false
interval = 5
device_list =

[fax]
voice_phone =
email_address =

[installation]
date_time = 22/07/14 22:25:58
version = 3.14.6

 <Package-name> <Package-Desc> <Required/Optional> <Min-Version> <Installed-Version> <Status> <Comment>

--------------------------
| External Dependencies |
--------------------------

 policykit Admin-Policy-framework OPTIONAL - 0.112 OK -
 gs Ghostscript REQUIRED 7.05 9.14 OK -
 network Network-wget OPTIONAL - 1.14 OK -
 scanimage Shell-Scanning OPTIONAL 1.0 1.0.24 OK -
 avahi-utils avahi-utils OPTIONAL - 0.6.31 OK -
 dbus DBus REQUIRED - 1.6.12 OK -
 cups CUPS REQUIRED 1.1 1.7.4 OK 'CUPS Scheduler is running'
 xsane SANE-GUI OPTIONAL 0.9 0.999 OK -

-------------------------
| General Dependencies |
-------------------------

 error: reportlab Python-PDF-Lib OPTIONAL 2.0 3.1.8 MISSING 'reportlab needs to be installed'
 libcrypto OpenSSL-Crypto-Lib REQUIRED - 1.0.1 OK -
 pil Python-Image-Lib OPTIONAL - 1.1.7 OK -
 pyqt4-dbus PyQt4-DBUS REQUIRED 4.0 4.10.2 OK -
 libjpeg JPEG-Lib REQUIRED - - OK -
 libpthread POSIX-Threads-Lib REQUIRED - 2.18 OK -
 python-dbus Python-DBUS REQUIRED 0.80.0 1.2.0 OK -
 python-devel Python-SDK REQUIRED 2.2 2.7.5 OK -
 pyqt4 Python-Qt4 REQUIRED 4.0 4.10.2 OK -
 cups-devel CUPS-SDK REQUIRED - 1.7.4 OK -
 sane-devel SANE-SDK REQUIRED - 1.0.24 OK -
 libusb USB-Lib REQUIRED - 1.0 OK -
 sane Scan-Lib REQUIRED - 1.0.24 OK -
 cups-image CUPS-Image-Lib REQUIRED - 1.7.4 OK -
 libnetsnmp-devel SNMP-Networking-SDK REQUIRED 5.0.9 5.7.2 OK -
 python-xml Python-XML-Lib REQUIRED - 2.1.0 OK -
 python-notify Desktop-notifications OPTIONAL - - OK -

------------------------------
| Compile Time Dependencies |
------------------------------

 gcc gcc-Compiler REQUIRED - 4.8.3 OK -
 libtool Build-tools REQUIRED - 2.4.2 OK -
 make GNU-Build-tools REQUIRED 3.0 3.82 OK -

----------------------
| Python Extentions |
----------------------

 cupsext CUPS-Extension REQUIRED - 3.14.6 OK -
 pcardext PhotoCard-Extension REQUIRED - 3.14.6 OK -
 hpmudext IO-Extension REQUIRED - 3.14.6 OK -

-----------------------
| Scan Configuration |
-----------------------

 hpaio HPLIP-SANE-Backend REQUIRED - 3.14.6 OK 'hpaio found in /etc/sane.d/dll.conf'
 scanext Scan-SANE-Extension REQUIRED - 3.14.6 OK -

------------------------------
| DISCOVERED SCANNER DEVICES |
------------------------------

device `hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590' is a Hewlett-Packard HP_LaserJet_3050 all-in-one
device `v4l:/dev/video0' is a Noname HP Webcam HD-2200 virtual device

--------------------------
| DISCOVERED USB DEVICES |
--------------------------

  Device URI Model
  -------------------------------- ----------------
  hp:/usb/HP_LaserJet_3050?serial= HP LaserJet 3050
  00CNRK171590

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------

hp_LaserJet_1300
----------------
Type: Printer
Device URI: hp:/net/hp_LaserJet_1300?ip=192.168.1.113
PPD: /etc/cups/ppd/hp_LaserJet_1300.ppd
PPD Description: HP LaserJet 1300 Series Postscript (recommended)
Printer status: printer hp_LaserJet_1300 is idle. enabled since Tue 22 Jul 2014 10:16:13 PM PDT
Communication status: Good

HP_LaserJet_3050
----------------
Type: Printer
Device URI: hp:/usb/HP_LaserJet_3050?serial=00CNRK171590
PPD: /etc/cups/ppd/HP_LaserJet_3050.ppd
PPD Description: HP LaserJet 3050 Postscript (recommended)
Printer status: printer HP_LaserJet_3050 is idle. enabled since Tue 22 Jul 2014 10:13:24 PM PDT
Communication status: Good

HP_LaserJet_3050_fax
--------------------
Type: Fax
Device URI: hpfax:/usb/HP_LaserJet_3050?serial=00CNRK171590
PPD: /etc/cups/ppd/HP_LaserJet_3050_fax.ppd
PPD Description: HP Fax hpcups
Printer status: printer HP_LaserJet_3050_fax is idle. enabled since Tue 22 Jul 2014 10:13:24 PM PDT
Communication status: Good

--------------
| PERMISSION |
--------------

USB HP_LaserJet_3050 Required - - OK Node:'/dev/bus/usb/002/003' Perm:' root lp rw- rw- rw- rw- r--'

-----------
| SELINUX |
-----------

SELinux disabled Optional - - OK -

-----------
| SUMMARY |
-----------

Missing Required Dependencies
-----------------------------
None

Missing Optional Dependencies
-----------------------------
error: 'python-reportlab' package is missing/incompatible

Total Errors: 1
Total Warnings: 0

Run 'hp-doctor' command to prompt and fix the issues.

Done.
[paul@paul Desktop]$

[paul@paul Desktop]$ sudo find /usr/ -name libsane-hpaio.so
/usr/lib64/sane/libsane-hpaio.so
[paul@paul Desktop]$

[paul@paul Desktop]$ sudo find /usr/ -name libsane.so
/usr/lib64/libsane.so
[paul@paul Desktop]$

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

The problem has still not been fixed. Why is this being ignored?

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Why is this not being attended to? The problem still exists. Scanning is still broken. When will this be addressed?

Hi Paul,

We apologize for late response on this.
Can you provide us the output of "hp-scan -g" command.

Thanks,
Goutam

[paul@paul Desktop]$ hp-scan -g

HP Linux Imaging and Printing System (ver. 3.14.6)
Scan Utility ver. 2.2

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-scan[29300]: debug: getDeviceUri(None, None, ['hpaio'], {'scan-type': (<built-in function gt>, 0)}, , True)
hp-scan[29300]: debug: Mode=0
hp-scan[29300]: debug: Cache miss: hp_laserjet_1300
hp-scan[29300]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Searching for section [hp_laserjet_1300] in file /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Found section [hp_laserjet_1300] in file /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Cache miss: hp_laserjet_3050
hp-scan[29300]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Searching for section [hp_laserjet_3050] in file /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Found section [hp_laserjet_3050] in file /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: {'hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590': ['HP_LaserJet_3050', 'HP_LaserJet_3050_2']}
Using device: hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590

warning: No destinations specified. Adding 'file' destination by default.
Using device hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590
Opening connection to device...
error: SANE: Invalid argument (code=4)
[paul@paul Desktop]$

On 31/08/14 11:42 PM, goutam wrote:
> Your question #244981 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/244981
>
> Status: Open => Answered
>
> goutam proposed the following answer:
> Hi Paul,
>
> We apologize for late response on this.
> Can you provide us the output of "hp-scan -g" command.
>
> Thanks,
> Goutam
>
[paul@paul Desktop]$ hp-scan -g

HP Linux Imaging and Printing System (ver. 3.14.6)
Scan Utility ver. 2.2

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-scan[29300]: debug: getDeviceUri(None, None, ['hpaio'], {'scan-type':
(<built-in function gt>, 0)}, , True)
hp-scan[29300]: debug: Mode=0
hp-scan[29300]: debug: Cache miss: hp_laserjet_1300
hp-scan[29300]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Searching for section [hp_laserjet_1300] in file
/usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Found section [hp_laserjet_1300] in file
/usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Cache miss: hp_laserjet_3050
hp-scan[29300]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Searching for section [hp_laserjet_3050] in file
/usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug: Found section [hp_laserjet_3050] in file
/usr/share/hplip/data/models/models.dat
hp-scan[29300]: debug:
{'hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590': ['HP_LaserJet_3050',
'HP_LaserJet_3050_2']}
Using device: hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590

warning: No destinations specified. Adding 'file' destination by default.
Using device hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590
Opening connection to device...
error: SANE: Invalid argument (code=4)
[paul@paul Desktop]$

--
----------------------------------------------------------------
cheers, Paul Erickson, MCP, Registered Clinical Counsellor

Phone: 604-719-6695

email: <email address hidden>

VA7NT - email: <email address hidden>

"Those who hear not the music, think the dancers mad."

"Tolerance becomes a crime when applied to evil." - Thomas Mann

"That state which separates its warriors from its scholars will have its thinking done by cowards and fighting done by fools"
- Thucydides - The Pelopenisia

"The Malice of the wicked is reinforced by the weakness of the virtuous."
- Churchill

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

The problem still exists, I have provided the information asked for, but nothing is being done. What is happening?

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

On 02/10/14 03:56 AM, Launchpad Janitor wrote:
> Your question #244981 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/244981
>
> Status: Open => Expired
>
> Launchpad Janitor expired the question:
> This question was expired because it remained in the 'Open' state
> without activity for the last 15 days.
>
The problem remains unsolved, please reopen this.

--
----------------------------------------------------------------
cheers, Paul Erickson, MCP, Registered Clinical Counsellor

Phone: 604-719-6695

email: <email address hidden>

VA7NT - email: <email address hidden>

"Those who hear not the music, think the dancers mad."

"Tolerance becomes a crime when applied to evil." - Thomas Mann

"That state which separates its warriors from its scholars will have its thinking done by cowards and fighting done by fools"
- Thucydides - The Pelopenisia

"The Malice of the wicked is reinforced by the weakness of the virtuous."
- Churchill

Hi Paul,

Sorry for the late response on this.
Please download latest hplip-3.14.10.run file from http://hplipopensource.com/hplip-web/gethplip.html and install it using command 'sh hplip-3.14.10.run' . Delete the existing print queue for this printer and reconfigure the printer using 'hp-setup' command. Now, try running 'hp-scan -i -g' in terminal and let us know if the issue is resolved.

Thanks,
Goutam

On 09/10/14 01:36 AM, goutam wrote:
> sh hplip-3.14.10.run
Hi Goutam:

This is what I get from hp-scan -i -g

[paul@paul Downloads]$ hp-scan -i -g

HP Linux Imaging and Printing System (ver. 3.14.10)
Scan Utility ver. 2.2

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-scan[8793]: debug: getDeviceUri(None, None, ['hpaio'], {'scan-type':
(<built-in function gt>, 0)}, , True)
hp-scan[8793]: debug: Mode=0
hp-scan[8793]: debug: Cache miss: hp_laserjet_1300
hp-scan[8793]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-scan[8793]: debug: Searching for section [hp_laserjet_1300] in file
/usr/share/hplip/data/models/models.dat
hp-scan[8793]: debug: Found section [hp_laserjet_1300] in file
/usr/share/hplip/data/models/models.dat
hp-scan[8793]: debug: Cache miss: hp_laserjet_3050
hp-scan[8793]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-scan[8793]: debug: Searching for section [hp_laserjet_3050] in file
/usr/share/hplip/data/models/models.dat
hp-scan[8793]: debug: Found section [hp_laserjet_3050] in file
/usr/share/hplip/data/models/models.dat
hp-scan[8793]: debug:
{'hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590': ['HP_LaserJet_3050']}
Using device: hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590

warning: No destinations specified. Adding 'file' destination by default.
Using device hpaio:/usb/HP_LaserJet_3050?serial=00CNRK171590
Opening connection to device...
error: SANE: Invalid argument (code=4)
[paul@paul Downloads]$

--
----------------------------------------------------------------
cheers, Paul Erickson, MCP, Registered Clinical Counsellor

Phone: 604-719-6695

email: <email address hidden>

VA7NT - email: <email address hidden>

"Those who hear not the music, think the dancers mad."

"Tolerance becomes a crime when applied to evil." - Thomas Mann

"That state which separates its warriors from its scholars will have its thinking done by cowards and fighting done by fools"
- Thucydides - The Pelopenisia

"The Malice of the wicked is reinforced by the weakness of the virtuous."
- Churchill

I have the same issues.

It seems to happen every couple of years one of the upgrades breaks the scan capability.

Frustrating.

I usually use pcLinuxOS and that's where I first noticed. Tried a OpenSUSE kde and its' the same there as well.

hp-scan -i -g

HP Linux Imaging and Printing System (ver. 3.13.10)
Scan Utility ver. 2.2

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-scan[20233]: debug: getDeviceUri(None, None, ['hpaio'], {'scan-type': (<built-in function gt>, 0)}, , True)
hp-scan[20233]: debug: Mode=0
hp-scan[20233]: debug: hp:/net/HP_Color_LaserJet_2840?ip=192.168.44.146: back_end:hp is_hp:True bus:net model:HP_Color_LaserJet_2840 serial: dev_file: host:192.168.44.146 zc: port:1
hp-scan[20233]: debug: Cache miss: hp_color_laserjet_2840
hp-scan[20233]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-scan[20233]: debug: Searching for section [hp_color_laserjet_2840] in file /usr/share/hplip/data/models/models.dat
hp-scan[20233]: debug: Found section [hp_color_laserjet_2840] in file /usr/share/hplip/data/models/models.dat
hp-scan[20233]: debug: hpfax:/net/HP_Color_LaserJet_2840?ip=192.168.44.146: back_end:hpfax is_hp:True bus:net model:HP_Color_LaserJet_2840 serial: dev_file: host:192.168.44.146 zc: port:1
hp-scan[20233]: debug: {'hpaio:/net/HP_Color_LaserJet_2840?ip=192.168.44.146': ['HP_Color_LaserJet_2840']}
Using device: hpaio:/net/HP_Color_LaserJet_2840?ip=192.168.44.146

warning: No destinations specified. Adding 'file' destination by default.
Using device hpaio:/net/HP_Color_LaserJet_2840?ip=192.168.44.146
Opening connection to device...
error: SANE: Invalid argument (code=4)

This question was expired because it remained in the 'Needs information' state without activity for the last 15 days.

On 04/11/14 02:36 AM, Launchpad Janitor wrote:
> Your question #244981 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/244981
>
> Status: Needs information => Expired
>
> Launchpad Janitor expired the question:
> This question was expired because it remained in the 'Needs information'
> state without activity for the last 15 days.
>
This problem is still not solved. What more information
do I need to provide?

--
----------------------------------------------------------------
cheers, Paul Erickson, MCP, Registered Clinical Counsellor

Phone: 604-719-6695

email: <email address hidden>

VA7NT - email: <email address hidden>

"Those who hear not the music, think the dancers mad."

"Tolerance becomes a crime when applied to evil." - Thomas Mann

"That state which separates its warriors from its scholars will have its thinking done by cowards and fighting done by fools"
- Thucydides - The Pelopenisia

"The Malice of the wicked is reinforced by the weakness of the virtuous."
- Churchill

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

On 20/11/14 02:46 AM, Launchpad Janitor wrote:
> Your question #244981 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/244981
>
> Status: Open => Expired
>
> Launchpad Janitor expired the question:
> This question was expired because it remained in the 'Open' state
> without activity for the last 15 days.
>
Matter is still not resolved. What additional information do I need to
provide?

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

On 06/12/14 02:36 AM, Launchpad Janitor wrote:
> Your question #244981 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/244981
>
> Status: Open => Expired
>
> Launchpad Janitor expired the question:
> This question was expired because it remained in the 'Open' state
> without activity for the last 15 days.
>
Problem remains

Yep...problem remains.

It was broken on an upgrade.

Why can't you backtrack and fix it ?

Or revert to a previous working version.

Breaking working software is unconscionable.

Hi,

Sorry for delay in fixing this issue. We do not have the setup here to exactly reproduce this scenario
Please provide us the output of lsusb -v command and 'hp-levels -i -g' .

Rgds,
Goutam

On 22/12/14 02:41 AM, goutam wrote:
> Your question #244981 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/244981
>
> Status: Open => Answered
>
> goutam proposed the following answer:
> Hi,
>
> Sorry for delay in fixing this issue. We do not have the setup here to exactly reproduce this scenario
> Please provide us the output of lsusb -v command and 'hp-levels -i -g' .
>
> Rgds,
> Goutam
>
[paul@paul Desktop]$ lsusb -v

Bus 002 Device 002: ID 03f0:3217 Hewlett-Packard LaserJet 3050
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 64
   idVendor 0x03f0 Hewlett-Packard
   idProduct 0x3217 LaserJet 3050
   bcdDevice 1.00
   iManufacturer 1 Hewlett-Packard
   iProduct 2 HP LaserJet 3050
   iSerial 3 00CNRK171590
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 85
     bNumInterfaces 2
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xc0
       Self Powered
     MaxPower 2mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 3
       bInterfaceClass 7 Printer
       bInterfaceSubClass 1 Printer
       bInterfaceProtocol 3 IEEE 1284.4 compatible bidirectional
       iInterface 16 1284.4 Printer
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x02 EP 2 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 255
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0001 1x 1 bytes
         bInterval 16
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 1
       bNumEndpoints 2
       bInterfaceClass 7 Printer
       bInterfaceSubClass 1 Printer
       bInterfaceProtocol 2 Bidirectional
       iInterface 17 Printer
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x02 EP 2 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 255
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 0
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 0
       bNumEndpoints 2
       bInterfaceClass 255 Vendor Specific Class
       bInterfaceSubClass 1
       bInterfaceProtocol 1
       iInterface 19 HP EWS
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x04 EP 4 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 255
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x84 EP 4 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 0
Device Qualifier (for other device speed):
   bLength 10
   bDescriptorType 6
   bcdUSB 2.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 64
   bNumConfigurations 1
Device Status: 0x0001
   Self Powered

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 1.10
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0001 1.1 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0002 1x 2 bytes
         bInterval 255

Bus 001 Device 003: ID 03f0:a707 Hewlett-Packard
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 239 Miscellaneous Device
   bDeviceSubClass 2 ?
   bDeviceProtocol 1 Interface Association
   bMaxPacketSize0 64
   idVendor 0x03f0 Hewlett-Packard
   idProduct 0xa707
   bcdDevice 0.30
   iManufacturer 1 HP Webcam HD-2200
   iProduct 2 HP Webcam HD-2200
   iSerial 0
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 1209
     bNumInterfaces 4
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0x80
       (Bus Powered)
     MaxPower 200mA
     Interface Association:
       bLength 8
       bDescriptorType 11
       bFirstInterface 0
       bInterfaceCount 2
       bFunctionClass 14 Video
       bFunctionSubClass 3 Video Interface Collection
       bFunctionProtocol 0
       iFunction 4 HP Webcam HD-2200
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 14 Video
       bInterfaceSubClass 1 Video Control
       bInterfaceProtocol 0
       iInterface 4 HP Webcam HD-2200
       VideoControl Interface Descriptor:
         bLength 13
         bDescriptorType 36
         bDescriptorSubtype 1 (HEADER)
         bcdUVC 1.00
         wTotalLength 105
         dwClockFrequency 30.000000MHz
         bInCollection 1
         baInterfaceNr( 0) 1
       VideoControl Interface Descriptor:
         bLength 18
         bDescriptorType 36
         bDescriptorSubtype 2 (INPUT_TERMINAL)
         bTerminalID 1
         wTerminalType 0x0201 Camera Sensor
         bAssocTerminal 5
         iTerminal 0
         wObjectiveFocalLengthMin 0
         wObjectiveFocalLengthMax 0
         wOcularFocalLength 0
         bControlSize 3
         bmControls 0x0000000e
           Auto-Exposure Mode
           Auto-Exposure Priority
           Exposure Time (Absolute)
       VideoControl Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 5 (PROCESSING_UNIT)
       Warning: Descriptor too short
         bUnitID 2
         bSourceID 1
         wMaxMultiplier 0
         bControlSize 2
         bmControls 0x0000177f
           Brightness
           Contrast
           Hue
           Saturation
           Sharpness
           Gamma
           White Balance Temperature
           Backlight Compensation
           Gain
           Power Line Frequency
           White Balance Temperature, Auto
         iProcessing 0
         bmVideoStandards 0x1b
           None
           NTSC - 525/60
           SECAM - 625/50
           NTSC - 625/50
       VideoControl Interface Descriptor:
         bLength 27
         bDescriptorType 36
         bDescriptorSubtype 6 (EXTENSION_UNIT)
         bUnitID 3
         guidExtensionCode {0a3e1874-8254-1a48-b402-48b8b8c49cc8}
         bNumControl 10
         bNrPins 1
         baSourceID( 0) 2
         bControlSize 2
         bmControls( 0) 0xff
         bmControls( 1) 0x03
         iExtension 0
       VideoControl Interface Descriptor:
         bLength 27
         bDescriptorType 36
         bDescriptorSubtype 6 (EXTENSION_UNIT)
         bUnitID 4
         guidExtensionCode {5bef79f6-df54-fc4b-b8cb-ca7e89a5233f}
         bNumControl 1
         bNrPins 1
         baSourceID( 0) 3
         bControlSize 2
         bmControls( 0) 0x00
         bmControls( 1) 0x08
         iExtension 0
       VideoControl Interface Descriptor:
         bLength 9
         bDescriptorType 36
         bDescriptorSubtype 3 (OUTPUT_TERMINAL)
         bTerminalID 5
         wTerminalType 0x0101 USB Streaming
         bAssocTerminal 0
         bSourceID 4
         iTerminal 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0010 1x 16 bytes
         bInterval 8
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 0
       bNumEndpoints 0
       bInterfaceClass 14 Video
       bInterfaceSubClass 2 Video Streaming
       bInterfaceProtocol 0
       iInterface 0
       VideoStreaming Interface Descriptor:
         bLength 15
         bDescriptorType 36
         bDescriptorSubtype 1 (INPUT_HEADER)
         bNumFormats 2
         wTotalLength 805
         bEndPointAddress 130
         bmInfo 1
         bTerminalLink 5
         bStillCaptureMethod 2
         bTriggerSupport 1
         bTriggerUsage 1
         bControlSize 1
         bmaControls( 0) 27
         bmaControls( 1) 27
       VideoStreaming Interface Descriptor:
         bLength 27
         bDescriptorType 36
         bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
         bFormatIndex 1
         bNumFrameDescriptors 7
         guidFormat {59555932-0000-1000-8000-00aa00389b71}
         bBitsPerPixel 16
         bDefaultFrameIndex 1
         bAspectRatioX 0
         bAspectRatioY 0
         bmInterlaceFlags 0x02
           Interlaced stream or variable: No
           Fields per frame: 1 fields
           Field 1 first: No
           Field pattern: Field 1 only
           bCopyProtect 0
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 1
         bmCapabilities 0x00
           Still image unsupported
         wWidth 640
         wHeight 480
         dwMinBitRate 24576000
         dwMaxBitRate 147456000
         dwMaxVideoFrameBufferSize 614400
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 2
         bmCapabilities 0x00
           Still image unsupported
         wWidth 352
         wHeight 288
         dwMinBitRate 8110080
         dwMaxBitRate 48660480
         dwMaxVideoFrameBufferSize 202752
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 3
         bmCapabilities 0x00
           Still image unsupported
         wWidth 320
         wHeight 240
         dwMinBitRate 6144000
         dwMaxBitRate 36864000
         dwMaxVideoFrameBufferSize 153600
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 4
         bmCapabilities 0x00
           Still image unsupported
         wWidth 176
         wHeight 144
         dwMinBitRate 2027520
         dwMaxBitRate 12165120
         dwMaxVideoFrameBufferSize 50688
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 5
         bmCapabilities 0x00
           Still image unsupported
         wWidth 160
         wHeight 120
         dwMinBitRate 1536000
         dwMaxBitRate 9216000
         dwMaxVideoFrameBufferSize 38400
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 38
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 6
         bmCapabilities 0x00
           Still image unsupported
         wWidth 800
         wHeight 600
         dwMinBitRate 38400000
         dwMaxBitRate 115200000
         dwMaxVideoFrameBufferSize 960000
         dwDefaultFrameInterval 666666
         bFrameIntervalType 3
         dwFrameInterval( 0) 666666
         dwFrameInterval( 1) 1000000
         dwFrameInterval( 2) 2000000
       VideoStreaming Interface Descriptor:
         bLength 34
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 7
         bmCapabilities 0x00
           Still image unsupported
         wWidth 1280
         wHeight 720
         dwMinBitRate 73728000
         dwMaxBitRate 110592000
         dwMaxVideoFrameBufferSize 1843200
         dwDefaultFrameInterval 1333333
         bFrameIntervalType 2
         dwFrameInterval( 0) 1333333
         dwFrameInterval( 1) 2000000
       VideoStreaming Interface Descriptor:
         bLength 34
         bDescriptorType 36
         bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
         bEndpointAddress 0
         bNumImageSizePatterns 7
         wWidth( 0) 640
         wHeight( 0) 480
         wWidth( 1) 352
         wHeight( 1) 288
         wWidth( 2) 320
         wHeight( 2) 240
         wWidth( 3) 176
         wHeight( 3) 144
         wWidth( 4) 160
         wHeight( 4) 120
         wWidth( 5) 800
         wHeight( 5) 600
         wWidth( 6) 1280
         wHeight( 6) 720
         bNumCompressionPatterns 7
       VideoStreaming Interface Descriptor:
         bLength 6
         bDescriptorType 36
         bDescriptorSubtype 13 (COLORFORMAT)
         bColorPrimaries 1 (BT.709,sRGB)
         bTransferCharacteristics 1 (BT.709)
         bMatrixCoefficients 4 (SMPTE 170M (BT.601))
       VideoStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 6 (FORMAT_MJPEG)
         bFormatIndex 2
         bNumFrameDescriptors 7
         bFlags 0
           Fixed-size samples: No
         bDefaultFrameIndex 1
         bAspectRatioX 0
         bAspectRatioY 0
         bmInterlaceFlags 0x02
           Interlaced stream or variable: No
           Fields per frame: 2 fields
           Field 1 first: No
           Field pattern: Field 1 only
           bCopyProtect 0
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 1
         bmCapabilities 0x00
           Still image unsupported
         wWidth 640
         wHeight 480
         dwMinBitRate 36864000
         dwMaxBitRate 221184000
         dwMaxVideoFrameBufferSize 921600
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 2
         bmCapabilities 0x00
           Still image unsupported
         wWidth 352
         wHeight 288
         dwMinBitRate 12165120
         dwMaxBitRate 72990720
         dwMaxVideoFrameBufferSize 304128
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 3
         bmCapabilities 0x00
           Still image unsupported
         wWidth 320
         wHeight 240
         dwMinBitRate 9216000
         dwMaxBitRate 55296000
         dwMaxVideoFrameBufferSize 230400
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 4
         bmCapabilities 0x00
           Still image unsupported
         wWidth 176
         wHeight 144
         dwMinBitRate 3041280
         dwMaxBitRate 18247680
         dwMaxVideoFrameBufferSize 76032
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 5
         bmCapabilities 0x00
           Still image unsupported
         wWidth 160
         wHeight 120
         dwMinBitRate 2304000
         dwMaxBitRate 13824000
         dwMaxVideoFrameBufferSize 57600
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 6
         bmCapabilities 0x00
           Still image unsupported
         wWidth 800
         wHeight 600
         dwMinBitRate 57600000
         dwMaxBitRate 345600000
         dwMaxVideoFrameBufferSize 1440000
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 7
         bmCapabilities 0x00
           Still image unsupported
         wWidth 1280
         wHeight 720
         dwMinBitRate 110592000
         dwMaxBitRate 663552000
         dwMaxVideoFrameBufferSize 2764800
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 34
         bDescriptorType 36
         bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
         bEndpointAddress 0
         bNumImageSizePatterns 7
         wWidth( 0) 640
         wHeight( 0) 480
         wWidth( 1) 352
         wHeight( 1) 288
         wWidth( 2) 320
         wHeight( 2) 240
         wWidth( 3) 176
         wHeight( 3) 144
         wWidth( 4) 160
         wHeight( 4) 120
         wWidth( 5) 800
         wHeight( 5) 600
         wWidth( 6) 1280
         wHeight( 6) 720
         bNumCompressionPatterns 7
       VideoStreaming Interface Descriptor:
         bLength 6
         bDescriptorType 36
         bDescriptorSubtype 13 (COLORFORMAT)
         bColorPrimaries 1 (BT.709,sRGB)
         bTransferCharacteristics 1 (BT.709)
         bMatrixCoefficients 4 (SMPTE 170M (BT.601))
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 1
       bNumEndpoints 1
       bInterfaceClass 14 Video
       bInterfaceSubClass 2 Video Streaming
       bInterfaceProtocol 0
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x13fc 3x 1020 bytes
         bInterval 1
     Interface Association:
       bLength 8
       bDescriptorType 11
       bFirstInterface 2
       bInterfaceCount 2
       bFunctionClass 1 Audio
       bFunctionSubClass 2 Streaming
       bFunctionProtocol 0
       iFunction 5 HP Webcam HD-2200
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 2
       bAlternateSetting 0
       bNumEndpoints 0
       bInterfaceClass 1 Audio
       bInterfaceSubClass 1 Control Device
       bInterfaceProtocol 0
       iInterface 5 HP Webcam HD-2200
       AudioControl Interface Descriptor:
         bLength 9
         bDescriptorType 36
         bDescriptorSubtype 1 (HEADER)
         bcdADC 1.00
         wTotalLength 38
         bInCollection 1
         baInterfaceNr( 0) 3
       AudioControl Interface Descriptor:
         bLength 12
         bDescriptorType 36
         bDescriptorSubtype 2 (INPUT_TERMINAL)
         bTerminalID 1
         wTerminalType 0x0201 Microphone
         bAssocTerminal 0
         bNrChannels 1
         wChannelConfig 0x0000
         iChannelNames 0
         iTerminal 0
       AudioControl Interface Descriptor:
         bLength 8
         bDescriptorType 36
         bDescriptorSubtype 6 (FEATURE_UNIT)
         bUnitID 2
         bSourceID 1
         bControlSize 1
         bmaControls( 0) 0x03
           Mute Control
           Volume Control
         iFeature 0
       AudioControl Interface Descriptor:
         bLength 9
         bDescriptorType 36
         bDescriptorSubtype 3 (OUTPUT_TERMINAL)
         bTerminalID 3
         wTerminalType 0x0101 USB Streaming
         bAssocTerminal 1
         bSourceID 2
         iTerminal 0
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 0
       bNumEndpoints 0
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 1
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 8000
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x0010 1x 16 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 2
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 16000
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x0020 1x 32 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 3
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 44100
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x005a 1x 90 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 4
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 48000
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x0060 1x 96 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
Device Qualifier (for other device speed):
   bLength 10
   bDescriptorType 6
   bcdUSB 2.00
   bDeviceClass 239 Miscellaneous Device
   bDeviceSubClass 2 ?
   bDeviceProtocol 1 Interface Association
   bMaxPacketSize0 64
   bNumConfigurations 1
Device Status: 0x0000
   (Bus Powered)

Bus 001 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 8
   idVendor 0x046d Logitech, Inc.
   idProduct 0xc52b Unifying Receiver
   bcdDevice 12.01
   iManufacturer 1
   iProduct 2
   iSerial 0
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 84
     bNumInterfaces 3
     bConfigurationValue 1
     iConfiguration 4
     bmAttributes 0xa0
       (Bus Powered)
       Remote Wakeup
     MaxPower 98mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 3 Human Interface Device
       bInterfaceSubClass 1 Boot Interface Subclass
       bInterfaceProtocol 1 Keyboard
       iInterface 0
         HID Device Descriptor:
           bLength 9
           bDescriptorType 33
           bcdHID 1.11
           bCountryCode 0 Not supported
           bNumDescriptors 1
           bDescriptorType 34 Report
           wDescriptorLength 59
          Report Descriptors:
            ** UNAVAILABLE **
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0008 1x 8 bytes
         bInterval 8
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 3 Human Interface Device
       bInterfaceSubClass 1 Boot Interface Subclass
       bInterfaceProtocol 2 Mouse
       iInterface 0
         HID Device Descriptor:
           bLength 9
           bDescriptorType 33
           bcdHID 1.11
           bCountryCode 0 Not supported
           bNumDescriptors 1
           bDescriptorType 34 Report
           wDescriptorLength 148
          Report Descriptors:
            ** UNAVAILABLE **
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0008 1x 8 bytes
         bInterval 2
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 2
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 3 Human Interface Device
       bInterfaceSubClass 0 No Subclass
       bInterfaceProtocol 0 None
       iInterface 0
         HID Device Descriptor:
           bLength 9
           bDescriptorType 33
           bcdHID 1.11
           bCountryCode 0 Not supported
           bNumDescriptors 1
           bDescriptorType 34 Report
           wDescriptorLength 98
          Report Descriptors:
            ** UNAVAILABLE **
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0020 1x 32 bytes
         bInterval 2

Bus 001 Device 002: ID 058f:6254 Alcor Micro Corp. USB Hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 1 Single TT
   bMaxPacketSize0 64
   idVendor 0x058f Alcor Micro Corp.
   idProduct 0x6254 USB Hub
   bcdDevice 1.00
   iManufacturer 0
   iProduct 0
   iSerial 0
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 100mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0001 1x 1 bytes
         bInterval 12

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 1.10
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0001 1.1 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0002 1x 2 bytes
         bInterval 255

Bus 008 Device 002: ID 1058:0748 Western Digital Technologies, Inc. My
Passport (WDBKXH)
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 3.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 9
   idVendor 0x1058 Western Digital Technologies, Inc.
   idProduct 0x0748 My Passport (WDBKXH)
   bcdDevice 10.22
   iManufacturer 1
   iProduct 2
   iSerial 5
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 44
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 4
     bmAttributes 0x80
       (Bus Powered)
     MaxPower 224mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 2
       bInterfaceClass 8 Mass Storage
       bInterfaceSubClass 6 SCSI
       bInterfaceProtocol 80 Bulk-Only
       iInterface 6
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0400 1x 1024 bytes
         bInterval 0
         bMaxBurst 15
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x02 EP 2 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0400 1x 1024 bytes
         bInterval 0
         bMaxBurst 15

Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 3.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 3
   bMaxPacketSize0 9
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0003 3.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 31
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12
         bMaxBurst 0

Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 1 Single TT
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12

Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 3.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 3
   bMaxPacketSize0 9
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0003 3.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 31
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12
         bMaxBurst 0

Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 1 Single TT
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12
[paul@paul Desktop]$

[paul@paul Desktop]$ lsusb -v

Bus 002 Device 002: ID 03f0:3217 Hewlett-Packard LaserJet 3050
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 64
   idVendor 0x03f0 Hewlett-Packard
   idProduct 0x3217 LaserJet 3050
   bcdDevice 1.00
   iManufacturer 1 Hewlett-Packard
   iProduct 2 HP LaserJet 3050
   iSerial 3 00CNRK171590
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 85
     bNumInterfaces 2
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xc0
       Self Powered
     MaxPower 2mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 3
       bInterfaceClass 7 Printer
       bInterfaceSubClass 1 Printer
       bInterfaceProtocol 3 IEEE 1284.4 compatible bidirectional
       iInterface 16 1284.4 Printer
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x02 EP 2 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 255
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0001 1x 1 bytes
         bInterval 16
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 1
       bNumEndpoints 2
       bInterfaceClass 7 Printer
       bInterfaceSubClass 1 Printer
       bInterfaceProtocol 2 Bidirectional
       iInterface 17 Printer
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x02 EP 2 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 255
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 0
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 0
       bNumEndpoints 2
       bInterfaceClass 255 Vendor Specific Class
       bInterfaceSubClass 1
       bInterfaceProtocol 1
       iInterface 19 HP EWS
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x04 EP 4 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 255
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x84 EP 4 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0200 1x 512 bytes
         bInterval 0
Device Qualifier (for other device speed):
   bLength 10
   bDescriptorType 6
   bcdUSB 2.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 64
   bNumConfigurations 1
Device Status: 0x0001
   Self Powered

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 1.10
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0001 1.1 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0002 1x 2 bytes
         bInterval 255

Bus 001 Device 003: ID 03f0:a707 Hewlett-Packard
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 239 Miscellaneous Device
   bDeviceSubClass 2 ?
   bDeviceProtocol 1 Interface Association
   bMaxPacketSize0 64
   idVendor 0x03f0 Hewlett-Packard
   idProduct 0xa707
   bcdDevice 0.30
   iManufacturer 1 HP Webcam HD-2200
   iProduct 2 HP Webcam HD-2200
   iSerial 0
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 1209
     bNumInterfaces 4
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0x80
       (Bus Powered)
     MaxPower 200mA
     Interface Association:
       bLength 8
       bDescriptorType 11
       bFirstInterface 0
       bInterfaceCount 2
       bFunctionClass 14 Video
       bFunctionSubClass 3 Video Interface Collection
       bFunctionProtocol 0
       iFunction 4 HP Webcam HD-2200
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 14 Video
       bInterfaceSubClass 1 Video Control
       bInterfaceProtocol 0
       iInterface 4 HP Webcam HD-2200
       VideoControl Interface Descriptor:
         bLength 13
         bDescriptorType 36
         bDescriptorSubtype 1 (HEADER)
         bcdUVC 1.00
         wTotalLength 105
         dwClockFrequency 30.000000MHz
         bInCollection 1
         baInterfaceNr( 0) 1
       VideoControl Interface Descriptor:
         bLength 18
         bDescriptorType 36
         bDescriptorSubtype 2 (INPUT_TERMINAL)
         bTerminalID 1
         wTerminalType 0x0201 Camera Sensor
         bAssocTerminal 5
         iTerminal 0
         wObjectiveFocalLengthMin 0
         wObjectiveFocalLengthMax 0
         wOcularFocalLength 0
         bControlSize 3
         bmControls 0x0000000e
           Auto-Exposure Mode
           Auto-Exposure Priority
           Exposure Time (Absolute)
       VideoControl Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 5 (PROCESSING_UNIT)
       Warning: Descriptor too short
         bUnitID 2
         bSourceID 1
         wMaxMultiplier 0
         bControlSize 2
         bmControls 0x0000177f
           Brightness
           Contrast
           Hue
           Saturation
           Sharpness
           Gamma
           White Balance Temperature
           Backlight Compensation
           Gain
           Power Line Frequency
           White Balance Temperature, Auto
         iProcessing 0
         bmVideoStandards 0x1b
           None
           NTSC - 525/60
           SECAM - 625/50
           NTSC - 625/50
       VideoControl Interface Descriptor:
         bLength 27
         bDescriptorType 36
         bDescriptorSubtype 6 (EXTENSION_UNIT)
         bUnitID 3
         guidExtensionCode {0a3e1874-8254-1a48-b402-48b8b8c49cc8}
         bNumControl 10
         bNrPins 1
         baSourceID( 0) 2
         bControlSize 2
         bmControls( 0) 0xff
         bmControls( 1) 0x03
         iExtension 0
       VideoControl Interface Descriptor:
         bLength 27
         bDescriptorType 36
         bDescriptorSubtype 6 (EXTENSION_UNIT)
         bUnitID 4
         guidExtensionCode {5bef79f6-df54-fc4b-b8cb-ca7e89a5233f}
         bNumControl 1
         bNrPins 1
         baSourceID( 0) 3
         bControlSize 2
         bmControls( 0) 0x00
         bmControls( 1) 0x08
         iExtension 0
       VideoControl Interface Descriptor:
         bLength 9
         bDescriptorType 36
         bDescriptorSubtype 3 (OUTPUT_TERMINAL)
         bTerminalID 5
         wTerminalType 0x0101 USB Streaming
         bAssocTerminal 0
         bSourceID 4
         iTerminal 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0010 1x 16 bytes
         bInterval 8
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 0
       bNumEndpoints 0
       bInterfaceClass 14 Video
       bInterfaceSubClass 2 Video Streaming
       bInterfaceProtocol 0
       iInterface 0
       VideoStreaming Interface Descriptor:
         bLength 15
         bDescriptorType 36
         bDescriptorSubtype 1 (INPUT_HEADER)
         bNumFormats 2
         wTotalLength 805
         bEndPointAddress 130
         bmInfo 1
         bTerminalLink 5
         bStillCaptureMethod 2
         bTriggerSupport 1
         bTriggerUsage 1
         bControlSize 1
         bmaControls( 0) 27
         bmaControls( 1) 27
       VideoStreaming Interface Descriptor:
         bLength 27
         bDescriptorType 36
         bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
         bFormatIndex 1
         bNumFrameDescriptors 7
         guidFormat {59555932-0000-1000-8000-00aa00389b71}
         bBitsPerPixel 16
         bDefaultFrameIndex 1
         bAspectRatioX 0
         bAspectRatioY 0
         bmInterlaceFlags 0x02
           Interlaced stream or variable: No
           Fields per frame: 1 fields
           Field 1 first: No
           Field pattern: Field 1 only
           bCopyProtect 0
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 1
         bmCapabilities 0x00
           Still image unsupported
         wWidth 640
         wHeight 480
         dwMinBitRate 24576000
         dwMaxBitRate 147456000
         dwMaxVideoFrameBufferSize 614400
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 2
         bmCapabilities 0x00
           Still image unsupported
         wWidth 352
         wHeight 288
         dwMinBitRate 8110080
         dwMaxBitRate 48660480
         dwMaxVideoFrameBufferSize 202752
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 3
         bmCapabilities 0x00
           Still image unsupported
         wWidth 320
         wHeight 240
         dwMinBitRate 6144000
         dwMaxBitRate 36864000
         dwMaxVideoFrameBufferSize 153600
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 4
         bmCapabilities 0x00
           Still image unsupported
         wWidth 176
         wHeight 144
         dwMinBitRate 2027520
         dwMaxBitRate 12165120
         dwMaxVideoFrameBufferSize 50688
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 5
         bmCapabilities 0x00
           Still image unsupported
         wWidth 160
         wHeight 120
         dwMinBitRate 1536000
         dwMaxBitRate 9216000
         dwMaxVideoFrameBufferSize 38400
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 38
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 6
         bmCapabilities 0x00
           Still image unsupported
         wWidth 800
         wHeight 600
         dwMinBitRate 38400000
         dwMaxBitRate 115200000
         dwMaxVideoFrameBufferSize 960000
         dwDefaultFrameInterval 666666
         bFrameIntervalType 3
         dwFrameInterval( 0) 666666
         dwFrameInterval( 1) 1000000
         dwFrameInterval( 2) 2000000
       VideoStreaming Interface Descriptor:
         bLength 34
         bDescriptorType 36
         bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
         bFrameIndex 7
         bmCapabilities 0x00
           Still image unsupported
         wWidth 1280
         wHeight 720
         dwMinBitRate 73728000
         dwMaxBitRate 110592000
         dwMaxVideoFrameBufferSize 1843200
         dwDefaultFrameInterval 1333333
         bFrameIntervalType 2
         dwFrameInterval( 0) 1333333
         dwFrameInterval( 1) 2000000
       VideoStreaming Interface Descriptor:
         bLength 34
         bDescriptorType 36
         bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
         bEndpointAddress 0
         bNumImageSizePatterns 7
         wWidth( 0) 640
         wHeight( 0) 480
         wWidth( 1) 352
         wHeight( 1) 288
         wWidth( 2) 320
         wHeight( 2) 240
         wWidth( 3) 176
         wHeight( 3) 144
         wWidth( 4) 160
         wHeight( 4) 120
         wWidth( 5) 800
         wHeight( 5) 600
         wWidth( 6) 1280
         wHeight( 6) 720
         bNumCompressionPatterns 7
       VideoStreaming Interface Descriptor:
         bLength 6
         bDescriptorType 36
         bDescriptorSubtype 13 (COLORFORMAT)
         bColorPrimaries 1 (BT.709,sRGB)
         bTransferCharacteristics 1 (BT.709)
         bMatrixCoefficients 4 (SMPTE 170M (BT.601))
       VideoStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 6 (FORMAT_MJPEG)
         bFormatIndex 2
         bNumFrameDescriptors 7
         bFlags 0
           Fixed-size samples: No
         bDefaultFrameIndex 1
         bAspectRatioX 0
         bAspectRatioY 0
         bmInterlaceFlags 0x02
           Interlaced stream or variable: No
           Fields per frame: 2 fields
           Field 1 first: No
           Field pattern: Field 1 only
           bCopyProtect 0
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 1
         bmCapabilities 0x00
           Still image unsupported
         wWidth 640
         wHeight 480
         dwMinBitRate 36864000
         dwMaxBitRate 221184000
         dwMaxVideoFrameBufferSize 921600
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 2
         bmCapabilities 0x00
           Still image unsupported
         wWidth 352
         wHeight 288
         dwMinBitRate 12165120
         dwMaxBitRate 72990720
         dwMaxVideoFrameBufferSize 304128
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 3
         bmCapabilities 0x00
           Still image unsupported
         wWidth 320
         wHeight 240
         dwMinBitRate 9216000
         dwMaxBitRate 55296000
         dwMaxVideoFrameBufferSize 230400
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 4
         bmCapabilities 0x00
           Still image unsupported
         wWidth 176
         wHeight 144
         dwMinBitRate 3041280
         dwMaxBitRate 18247680
         dwMaxVideoFrameBufferSize 76032
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 5
         bmCapabilities 0x00
           Still image unsupported
         wWidth 160
         wHeight 120
         dwMinBitRate 2304000
         dwMaxBitRate 13824000
         dwMaxVideoFrameBufferSize 57600
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 6
         bmCapabilities 0x00
           Still image unsupported
         wWidth 800
         wHeight 600
         dwMinBitRate 57600000
         dwMaxBitRate 345600000
         dwMaxVideoFrameBufferSize 1440000
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 50
         bDescriptorType 36
         bDescriptorSubtype 7 (FRAME_MJPEG)
         bFrameIndex 7
         bmCapabilities 0x00
           Still image unsupported
         wWidth 1280
         wHeight 720
         dwMinBitRate 110592000
         dwMaxBitRate 663552000
         dwMaxVideoFrameBufferSize 2764800
         dwDefaultFrameInterval 333333
         bFrameIntervalType 6
         dwFrameInterval( 0) 333333
         dwFrameInterval( 1) 400000
         dwFrameInterval( 2) 500000
         dwFrameInterval( 3) 666666
         dwFrameInterval( 4) 1000000
         dwFrameInterval( 5) 2000000
       VideoStreaming Interface Descriptor:
         bLength 34
         bDescriptorType 36
         bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
         bEndpointAddress 0
         bNumImageSizePatterns 7
         wWidth( 0) 640
         wHeight( 0) 480
         wWidth( 1) 352
         wHeight( 1) 288
         wWidth( 2) 320
         wHeight( 2) 240
         wWidth( 3) 176
         wHeight( 3) 144
         wWidth( 4) 160
         wHeight( 4) 120
         wWidth( 5) 800
         wHeight( 5) 600
         wWidth( 6) 1280
         wHeight( 6) 720
         bNumCompressionPatterns 7
       VideoStreaming Interface Descriptor:
         bLength 6
         bDescriptorType 36
         bDescriptorSubtype 13 (COLORFORMAT)
         bColorPrimaries 1 (BT.709,sRGB)
         bTransferCharacteristics 1 (BT.709)
         bMatrixCoefficients 4 (SMPTE 170M (BT.601))
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 1
       bNumEndpoints 1
       bInterfaceClass 14 Video
       bInterfaceSubClass 2 Video Streaming
       bInterfaceProtocol 0
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x13fc 3x 1020 bytes
         bInterval 1
     Interface Association:
       bLength 8
       bDescriptorType 11
       bFirstInterface 2
       bInterfaceCount 2
       bFunctionClass 1 Audio
       bFunctionSubClass 2 Streaming
       bFunctionProtocol 0
       iFunction 5 HP Webcam HD-2200
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 2
       bAlternateSetting 0
       bNumEndpoints 0
       bInterfaceClass 1 Audio
       bInterfaceSubClass 1 Control Device
       bInterfaceProtocol 0
       iInterface 5 HP Webcam HD-2200
       AudioControl Interface Descriptor:
         bLength 9
         bDescriptorType 36
         bDescriptorSubtype 1 (HEADER)
         bcdADC 1.00
         wTotalLength 38
         bInCollection 1
         baInterfaceNr( 0) 3
       AudioControl Interface Descriptor:
         bLength 12
         bDescriptorType 36
         bDescriptorSubtype 2 (INPUT_TERMINAL)
         bTerminalID 1
         wTerminalType 0x0201 Microphone
         bAssocTerminal 0
         bNrChannels 1
         wChannelConfig 0x0000
         iChannelNames 0
         iTerminal 0
       AudioControl Interface Descriptor:
         bLength 8
         bDescriptorType 36
         bDescriptorSubtype 6 (FEATURE_UNIT)
         bUnitID 2
         bSourceID 1
         bControlSize 1
         bmaControls( 0) 0x03
           Mute Control
           Volume Control
         iFeature 0
       AudioControl Interface Descriptor:
         bLength 9
         bDescriptorType 36
         bDescriptorSubtype 3 (OUTPUT_TERMINAL)
         bTerminalID 3
         wTerminalType 0x0101 USB Streaming
         bAssocTerminal 1
         bSourceID 2
         iTerminal 0
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 0
       bNumEndpoints 0
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 1
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 8000
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x0010 1x 16 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 2
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 16000
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x0020 1x 32 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 3
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 44100
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x005a 1x 90 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 3
       bAlternateSetting 4
       bNumEndpoints 1
       bInterfaceClass 1 Audio
       bInterfaceSubClass 2 Streaming
       bInterfaceProtocol 0
       iInterface 0
       AudioStreaming Interface Descriptor:
         bLength 7
         bDescriptorType 36
         bDescriptorSubtype 1 (AS_GENERAL)
         bTerminalLink 3
         bDelay 1 frames
         wFormatTag 1 PCM
       AudioStreaming Interface Descriptor:
         bLength 11
         bDescriptorType 36
         bDescriptorSubtype 2 (FORMAT_TYPE)
         bFormatType 1 (FORMAT_TYPE_I)
         bNrChannels 1
         bSubframeSize 2
         bBitResolution 16
         bSamFreqType 1 Discrete
         tSamFreq[ 0] 48000
       Endpoint Descriptor:
         bLength 9
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 5
           Transfer Type Isochronous
           Synch Type Asynchronous
           Usage Type Data
         wMaxPacketSize 0x0060 1x 96 bytes
         bInterval 4
         bRefresh 0
         bSynchAddress 0
         AudioControl Endpoint Descriptor:
           bLength 7
           bDescriptorType 37
           bDescriptorSubtype 1 (EP_GENERAL)
           bmAttributes 0x01
             Sampling Frequency
           bLockDelayUnits 0 Undefined
           wLockDelay 0 Undefined
Device Qualifier (for other device speed):
   bLength 10
   bDescriptorType 6
   bcdUSB 2.00
   bDeviceClass 239 Miscellaneous Device
   bDeviceSubClass 2 ?
   bDeviceProtocol 1 Interface Association
   bMaxPacketSize0 64
   bNumConfigurations 1
Device Status: 0x0000
   (Bus Powered)

Bus 001 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 8
   idVendor 0x046d Logitech, Inc.
   idProduct 0xc52b Unifying Receiver
   bcdDevice 12.01
   iManufacturer 1
   iProduct 2
   iSerial 0
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 84
     bNumInterfaces 3
     bConfigurationValue 1
     iConfiguration 4
     bmAttributes 0xa0
       (Bus Powered)
       Remote Wakeup
     MaxPower 98mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 3 Human Interface Device
       bInterfaceSubClass 1 Boot Interface Subclass
       bInterfaceProtocol 1 Keyboard
       iInterface 0
         HID Device Descriptor:
           bLength 9
           bDescriptorType 33
           bcdHID 1.11
           bCountryCode 0 Not supported
           bNumDescriptors 1
           bDescriptorType 34 Report
           wDescriptorLength 59
          Report Descriptors:
            ** UNAVAILABLE **
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0008 1x 8 bytes
         bInterval 8
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 1
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 3 Human Interface Device
       bInterfaceSubClass 1 Boot Interface Subclass
       bInterfaceProtocol 2 Mouse
       iInterface 0
         HID Device Descriptor:
           bLength 9
           bDescriptorType 33
           bcdHID 1.11
           bCountryCode 0 Not supported
           bNumDescriptors 1
           bDescriptorType 34 Report
           wDescriptorLength 148
          Report Descriptors:
            ** UNAVAILABLE **
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x82 EP 2 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0008 1x 8 bytes
         bInterval 2
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 2
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 3 Human Interface Device
       bInterfaceSubClass 0 No Subclass
       bInterfaceProtocol 0 None
       iInterface 0
         HID Device Descriptor:
           bLength 9
           bDescriptorType 33
           bcdHID 1.11
           bCountryCode 0 Not supported
           bNumDescriptors 1
           bDescriptorType 34 Report
           wDescriptorLength 98
          Report Descriptors:
            ** UNAVAILABLE **
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x83 EP 3 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0020 1x 32 bytes
         bInterval 2

Bus 001 Device 002: ID 058f:6254 Alcor Micro Corp. USB Hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 1 Single TT
   bMaxPacketSize0 64
   idVendor 0x058f Alcor Micro Corp.
   idProduct 0x6254 USB Hub
   bcdDevice 1.00
   iManufacturer 0
   iProduct 0
   iSerial 0
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 100mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0001 1x 1 bytes
         bInterval 12

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 1.10
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 0 Full speed (or root) hub
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0001 1.1 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0002 1x 2 bytes
         bInterval 255

Bus 008 Device 002: ID 1058:0748 Western Digital Technologies, Inc. My
Passport (WDBKXH)
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 3.00
   bDeviceClass 0 (Defined at Interface level)
   bDeviceSubClass 0
   bDeviceProtocol 0
   bMaxPacketSize0 9
   idVendor 0x1058 Western Digital Technologies, Inc.
   idProduct 0x0748 My Passport (WDBKXH)
   bcdDevice 10.22
   iManufacturer 1
   iProduct 2
   iSerial 5
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 44
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 4
     bmAttributes 0x80
       (Bus Powered)
     MaxPower 224mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 2
       bInterfaceClass 8 Mass Storage
       bInterfaceSubClass 6 SCSI
       bInterfaceProtocol 80 Bulk-Only
       iInterface 6
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0400 1x 1024 bytes
         bInterval 0
         bMaxBurst 15
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x02 EP 2 OUT
         bmAttributes 2
           Transfer Type Bulk
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0400 1x 1024 bytes
         bInterval 0
         bMaxBurst 15

Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 3.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 3
   bMaxPacketSize0 9
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0003 3.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 31
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12
         bMaxBurst 0

Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 1 Single TT
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12

Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 3.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 3
   bMaxPacketSize0 9
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0003 3.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 31
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12
         bMaxBurst 0

Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
   bLength 18
   bDescriptorType 1
   bcdUSB 2.00
   bDeviceClass 9 Hub
   bDeviceSubClass 0 Unused
   bDeviceProtocol 1 Single TT
   bMaxPacketSize0 64
   idVendor 0x1d6b Linux Foundation
   idProduct 0x0002 2.0 root hub
   bcdDevice 3.17
   iManufacturer 3
   iProduct 2
   iSerial 1
   bNumConfigurations 1
   Configuration Descriptor:
     bLength 9
     bDescriptorType 2
     wTotalLength 25
     bNumInterfaces 1
     bConfigurationValue 1
     iConfiguration 0
     bmAttributes 0xe0
       Self Powered
       Remote Wakeup
     MaxPower 0mA
     Interface Descriptor:
       bLength 9
       bDescriptorType 4
       bInterfaceNumber 0
       bAlternateSetting 0
       bNumEndpoints 1
       bInterfaceClass 9 Hub
       bInterfaceSubClass 0 Unused
       bInterfaceProtocol 0 Full speed (or root) hub
       iInterface 0
       Endpoint Descriptor:
         bLength 7
         bDescriptorType 5
         bEndpointAddress 0x81 EP 1 IN
         bmAttributes 3
           Transfer Type Interrupt
           Synch Type None
           Usage Type Data
         wMaxPacketSize 0x0004 1x 4 bytes
         bInterval 12
[paul@paul Desktop]$
[paul@paul Desktop]$ hp-levels -i -g

HP Linux Imaging and Printing System (ver. 3.14.10)
Supply Levels Utility ver. 2.0

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-levels[13739]: debug: getDeviceUri(None, None, ('hp',), None, , True)
hp-levels[13739]: debug: Mode=0
hp-levels[13739]: debug: Cache miss: hp_laserjet_1300
hp-levels[13739]: debug: Reading file:
/usr/share/hplip/data/models/models.dat
hp-levels[13739]: debug: Searching for section [hp_laserjet_1300] in
file /usr/share/hplip/data/models/models.dat
hp-levels[13739]: debug: Found section [hp_laserjet_1300] in file
/usr/share/hplip/data/models/models.dat
hp-levels[13739]: debug: Cache miss: hp_laserjet_3050
hp-levels[13739]: debug: Reading file:
/usr/share/hplip/data/models/models.dat
hp-levels[13739]: debug: Searching for section [hp_laserjet_3050] in
file /usr/share/hplip/data/models/models.dat
hp-levels[13739]: debug: Found section [hp_laserjet_3050] in file
/usr/share/hplip/data/models/models.dat
hp-levels[13739]: debug:
{'hp:/usb/HP_LaserJet_3050?serial=00CNRK171590': ['HP_LaserJet_3050'],
'hp:/net/hp_LaserJet_1300?ip=192.168.1.113': ['hp_LaserJet_1300']}

-----------------
| SELECT DEVICE |
-----------------

   Num Device URI CUPS Printer(s)
   -------- -------------------------------------------- ----------------
   0 hp:/usb/HP_LaserJet_3050?serial=00CNRK171590 HP_LaserJet_3050
   1 hp:/net/hp_LaserJet_1300?ip=192.168.1.113 hp_LaserJet_1300

Enter number 0...1 for device (q=quit) ?q
error: No device selected/specified or that supports this functionality.
[paul@paul Desktop]$ clear

[paul@paul Desktop]$ hp-levels -i -g

HP Linux Imaging and Printing System (ver. 3.14.10)
Supply Levels Utility ver. 2.0

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-levels[13744]: debug: getDeviceUri(None, None, ('hp',), None, , True)
hp-levels[13744]: debug: Mode=0
hp-levels[13744]: debug: Cache miss: hp_laserjet_1300
hp-levels[13744]: debug: Reading file:
/usr/share/hplip/data/models/models.dat
hp-levels[13744]: debug: Searching for section [hp_laserjet_1300] in
file /usr/share/hplip/data/models/models.dat
hp-levels[13744]: debug: Found section [hp_laserjet_1300] in file
/usr/share/hplip/data/models/models.dat
hp-levels[13744]: debug: Cache miss: hp_laserjet_3050
hp-levels[13744]: debug: Reading file:
/usr/share/hplip/data/models/models.dat
hp-levels[13744]: debug: Searching for section [hp_laserjet_3050] in
file /usr/share/hplip/data/models/models.dat
hp-levels[13744]: debug: Found section [hp_laserjet_3050] in file
/usr/share/hplip/data/models/models.dat
hp-levels[13744]: debug:
{'hp:/usb/HP_LaserJet_3050?serial=00CNRK171590': ['HP_LaserJet_3050'],
'hp:/net/hp_LaserJet_1300?ip=192.168.1.113': ['hp_LaserJet_1300']}

-----------------
| SELECT DEVICE |
-----------------

   Num Device URI CUPS Printer(s)
   -------- -------------------------------------------- ----------------
   0 hp:/usb/HP_LaserJet_3050?serial=00CNRK171590 HP_LaserJet_3050
   1 hp:/net/hp_LaserJet_1300?ip=192.168.1.113 hp_LaserJet_1300

Enter number 0...1 for device (q=quit) ?0
hp-levels[13744]: debug: ********** Agent: 1 **********
hp-levels[13744]: debug: OID_MARKER_SUPPLIES_TYPE_1:
hp-levels[13744]: debug: OID_MARKER_SUPPLIES_LEVEL_1:
hp-levels[13744]: debug: agent1-level: 254
hp-levels[13744]: debug: OID_MARKER_SUPPLIES_MAX_1:
hp-levels[13744]: debug: agent1-max: 254
hp-levels[13744]: debug: OID_MARKER_SUPPLIES_COLORANT_INDEX_1:
hp-levels[13744]: debug: Failed
hp-levels[13744]: debug: OID_MARKER_STATUS_1:
hp-levels[13744]: debug: agent1: kind=4, type=1, health=0, level=100,
level-trigger=0
hp-levels[13744]: debug: ********** Agent: 2 **********
hp-levels[13744]: debug: OID_MARKER_SUPPLIES_TYPE_2:
hp-levels[13744]: debug: End of supply information.
hp-levels[13744]: debug: printer_status=3
hp-levels[13744]: debug: device_status=2
hp-levels[13744]: debug: cover_status=4
hp-levels[13744]: debug: detected_error_state=0 (0x0)
hp-levels[13744]: debug: Printer status=1000

hp-levels[13744]: debug: 1: agent_type 1 agent_kind 4 agent_sku
'C7115A/C7115X'
Black toner cartridge
Part No.: C7115A/C7115X
Health: Good/OK

----------------------------------------------------------------
|//////////////////////////////////////////////////////////////|
(approx. 100%)
----------------------------------------------------------------

Done.
[paul@paul Desktop]$

--
----------------------------------------------------------------
cheers, Paul Erickson, MCP, Registered Clinical Counsellor

Phone: 604-719-6695

email: <email address hidden>

VA7NT - email: <email address hidden>

"Those who hear not the music, think the dancers mad."

"Tolerance becomes a crime when applied to evil." - Thomas Mann

"That state which separates its warriors from its scholars will have its thinking done by cowards and fighting done by fools"
- Thucydides - The Pelopenisia

"The Malice of the wicked is reinforced by the weakness of the virtuous."
- Churchill

Hi,

Thanks for providing the outputs. This helped us to debug that device channels are opening and we are able to fetch data from the channels. But still this did not help us fully to debug the scan issue.

Can we ask some more help from you to debug this case?

we would want to see the debug statements of the scan backend in /var/log/messages file.

To provide same can you go to hplip-3.14.10 folder and open the file hplip-3.14.10/io/hpmud/hpmudi.h and change the line "//#define HPMUD_DEBUG" to "#defind HPMUD_DEBUG"

You can directly run command : " sed -i 's/\/\/#define HPMUD_DEBUG/#define HPMUD_DEBUG/' io/hpmud/hpmudi.h " in terminal by being inside the folder hplip-3.14.10 to do the above change.

After this, save the file and run command 'make' & 'sudo make install' inside the directory hplip-3.14.10.

Now lets clear the content inside the file /var/log/message by running command : su -c 'cat /dev/null > /var/log/messages'

Next, run command 'hp-scan -i -g' in terminal.

Provide me the file /var/log/messages. You can attach this file to the link https://answers.launchpad.net/hplip/+question/244981/+makebug.

Thank you very much for helping us in debugging this issue.

thanks,
Goutam

On 22/12/14 11:01 PM, goutam wrote:
> Your question #244981 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/244981
>
> Status: Open => Answered
>
> goutam proposed the following answer:
> Hi,
>
> Thanks for providing the outputs. This helped us to debug that device
> channels are opening and we are able to fetch data from the channels.
> But still this did not help us fully to debug the scan issue.
>
> Can we ask some more help from you to debug this case?
>
> we would want to see the debug statements of the scan backend in
> /var/log/messages file.
>
> To provide same can you go to hplip-3.14.10 folder and open the file
> hplip-3.14.10/io/hpmud/hpmudi.h and change the line "//#define
> HPMUD_DEBUG" to "#defind HPMUD_DEBUG"
>
> You can directly run command : " sed -i 's/\/\/#define
> HPMUD_DEBUG/#define HPMUD_DEBUG/' io/hpmud/hpmudi.h "
> in terminal by being inside the folder hplip-3.14.10 to do the above
> change.
>
> After this, save the file and run command 'make' & 'sudo make
> install' inside the directory hplip-3.14.10.
>
> Now lets clear the content inside the file /var/log/message by running
> command : su -c 'cat /dev/null > /var/log/messages'
>
> Next, run command 'hp-scan -i -g' in terminal.
>
> Provide me the file /var/log/messages. You can attach this file to the
> link https://answers.launchpad.net/hplip/+question/244981/+makebug.
>
> Thank you very much for helping us in debugging this issue.
>
> thanks,
> Goutam
>
I have provided the contents of /var/log/messages to the link
above.

Here is the content of /var/log/messages as well:

Dec 22 23:57:30 paul su: (to root) paul on pts/1
Dec 22 23:57:53 paul fprintd: ** Message: No devices in use, exit
Dec 22 23:58:50 paul python: io/hpmud/hpmud.c 382: [20227] hpmud_init()
Dec 22 23:58:50 paul hp-scan: hp-scan[20227]: warning: No destinations
specified. Adding 'file' destination by default.
Dec 22 23:58:50 paul hp-scan: io/hpmud/hpmud.c 608: [20227]
hpmud_probe_devices() bus=3
Dec 22 23:58:52 paul hp-scan: io/hpmud/hpmud.c 525:
[20227,17403,1000,1000,1000,1000] hpmud_device_open()
uri=hp:/usb/HP_LaserJet_3050?serial=00CNRK171590 iomode=4
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 425: Found interface
conf=0, iface=0, altset=1, index=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 387: Active kernel driver
on interface=0 ret=0
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 530: claimed 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 774: read actual device_id
successfully fd=1 len=173
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 556: released 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/hpmud.c 572: [20227]
hpmud_get_device_id() dd=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 425: Found interface
conf=0, iface=0, altset=1, index=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 387: Active kernel driver
on interface=0 ret=0
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 530: claimed 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 774: read actual device_id
successfully fd=1 len=173
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 556: released 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/hpmud.c 642: [20227]
hpmud_channel_open() dd=1 name=HP-MESSAGE
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 953: new HP-MESSAGE
channel=1 clientCnt=1 channelCnt=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 425: Found interface
conf=0, iface=0, altset=0, index=2
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 387: Active kernel driver
on interface=0 ret=0
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 530: claimed 7/1/3 interface
Dec 22 23:58:52 paul hp-scan: [0000] 00 00 00 08 01 00 00
20 .......
Dec 22 23:58:52 paul hp-scan: [0000]
04 .
Dec 22 23:58:56 paul hp-scan: io/hpmud/dot4.c 231: unable to read
Dot4ReverseReply header: Resource temporarily unavailable bytesRead=1
Dec 22 23:58:56 paul hp-scan: io/hpmud/dot4.c 319: invalid DOT4InitReply
retrying command...
Dec 22 23:58:56 paul hp-scan: [0000] 00 00 00 08 01 00 00
20 .......
Dec 22 23:59:00 paul hp-scan: io/hpmud/dot4.c 231: unable to read
Dot4ReverseReply header: Resource temporarily unavailable bytesRead=0
Dec 22 23:59:00 paul hp-scan: io/hpmud/dot4.c 330: invalid
DOT4InitReply: cmd=0, result=20
, revision=d0
Dec 22 23:59:00 paul hp-scan: io/hpmud/musb.c 968: removed HP-MESSAGE
channel=1 clientCnt=0 channelCnt=0
Dec 22 23:59:00 paul hp-scan: failed to open pml channel:
scan/sane/sclpml.c 391
Dec 22 23:59:00 paul hp-scan: hp-scan[20227]: error: SANE: Invalid
argument (code=4)
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 387: [20227] hpmud_exit()
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 361: device_cleanup:
device uri=hp:/usb/HP_LaserJet_3050?serial=00CNRK171590
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 373: device_cleanup:
close device dd=1...
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 553: [20227]
hpmud_device_close() dd=1
Dec 22 23:59:00 paul hp-scan: io/hpmud/musb.c 556: released 7/1/3 interface
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 375: device_cleanup: done
closing device dd=1
Dec 22 23:59:03 paul kernel: [1457013.180216] usb 2-1: USB disconnect,
device number 2
Dec 22 23:59:03 paul kernel: usb 2-1: USB disconnect, device number 2
Dec 22 23:59:03 paul udev-configure-printer: Disabled printer
ipp://localhost:631/printers/HP_LaserJet_3050 as the corresponding
device was unplugged or turned off
Dec 22 23:59:03 paul udev-configure-printer: Disabled printer
ipp://localhost:631/printers/HP_LaserJet_3050_fax as the corresponding
device was unplugged or turned off
Dec 22 23:59:03 paul systemd: Unit printer.target is not needed anymore.
Stopping.
Dec 22 23:59:03 paul systemd: Stopping Printer.
Dec 22 23:59:03 paul systemd: Stopped target Printer.
Dec 22 23:59:03 paul colord: device removed:
sysfs-Hewlett-Packard-HP_LaserJet_3050
Dec 22 23:59:32 paul kernel: [1457042.459547] usb 2-1: new high-speed
USB device number 3 using ehci-pci
Dec 22 23:59:32 paul kernel: usb 2-1: new high-speed USB device number 3
using ehci-pci
Dec 22 23:59:33 paul kernel: [1457042.576184] usb 2-1: New USB device
found, idVendor=03f0, idProduct=3217
Dec 22 23:59:33 paul kernel: [1457042.576188] usb 2-1: New USB device
strings: Mfr=1, Product=2, SerialNumber=3
Dec 22 23:59:33 paul kernel: [1457042.576190] usb 2-1: Product: HP
LaserJet 3050
Dec 22 23:59:33 paul kernel: [1457042.576192] usb 2-1: Manufacturer:
Hewlett-Packard
Dec 22 23:59:33 paul kernel: [1457042.576193] usb 2-1: SerialNumber:
00CNRK171590
Dec 22 23:59:33 paul kernel: usb 2-1: New USB device found,
idVendor=03f0, idProduct=3217
Dec 22 23:59:33 paul kernel: usb 2-1: New USB device strings: Mfr=1,
Product=2, SerialNumber=3
Dec 22 23:59:33 paul kernel: usb 2-1: Product: HP LaserJet 3050
Dec 22 23:59:33 paul kernel: usb 2-1: Manufacturer: Hewlett-Packard
Dec 22 23:59:33 paul kernel: [1457042.578963] usblp 2-1:1.0: usblp0: USB
Bidirectional printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:33 paul kernel: usb 2-1: SerialNumber: 00CNRK171590
Dec 22 23:59:33 paul kernel: usblp 2-1:1.0: usblp0: USB Bidirectional
printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:33 paul logger: loading HP Device 002 003
Dec 22 23:59:33 paul systemd: Starting Configure HP Plugged-In Printer...
Dec 22 23:59:33 paul systemd: Started Configure HP Plugged-In Printer.
Dec 22 23:59:33 paul systemd: Starting Printer.
Dec 22 23:59:33 paul systemd: Reached target Printer.
Dec 22 23:59:33 paul systemd: Starting Configure Plugged-In Printer...
Dec 22 23:59:33 paul systemd: Started Configure Plugged-In Printer.
Dec 22 23:59:33 paul colord: Device added:
sysfs-Hewlett-Packard-HP_LaserJet_3050
Dec 22 23:59:33 paul python: io/hpmud/hpmud.c 382: [20268] hpmud_init()
Dec 22 23:59:33 paul python: io/hpmud/musb.c 2160: [20268]
hpmud_make_usb_uri() bus=002 dev=003
Dec 22 23:59:33 paul python: io/hpmud/musb.c 2257: hpmud_make_usb_uri()
uri=hp:/usb/HP_LaserJet_3050?serial=00CNRK171590 bytes_read=44
Dec 22 23:59:33 paul python: io/hpmud/hpmud.c 387: [20268] hpmud_exit()
Dec 22 23:59:34 paul hp: io/hpmud/hpmud.c 382: [20283] hpmud_init()
Dec 22 23:59:34 paul hp[20283]: io/hpmud/hpmud.c 608: [20283]
hpmud_probe_devices() bus=3
Dec 22 23:59:34 paul hp[20283]: io/hpmud/hpmud.c 387: [20283] hpmud_exit()
Dec 22 23:59:34 paul kernel: [1457043.772835] usblp0: removed
Dec 22 23:59:34 paul kernel: usblp0: removed
Dec 22 23:59:34 paul kernel: [1457043.776951] usblp 2-1:1.0: usblp0: USB
Bidirectional printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:34 paul kernel: usblp 2-1:1.0: usblp0: USB Bidirectional
printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 382: [20287] hpmud_init()
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 608: [20287]
hpmud_probe_devices() bus=1
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 608: [20287]
hpmud_probe_devices() bus=2
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 387: [20287] hpmud_exit()
Dec 22 23:59:34 paul udev-configure-printer: Re-enabled printer
ipp://localhost:631/printers/HP_LaserJet_3050
Dec 22 23:59:34 paul udev-configure-printer: Re-enabled printer
ipp://localhost:631/printers/HP_LaserJet_3050_fax
Dec 23 00:00:01 paul systemd: Starting Session 426 of user paul.
Dec 23 00:00:01 paul systemd: Started Session 426 of user paul.
[paul@paul ~]$ clear

[paul@paul ~]$ cat hplip.txt
Dec 22 23:57:30 paul su: (to root) paul on pts/1
Dec 22 23:57:53 paul fprintd: ** Message: No devices in use, exit
Dec 22 23:58:50 paul python: io/hpmud/hpmud.c 382: [20227] hpmud_init()
Dec 22 23:58:50 paul hp-scan: hp-scan[20227]: warning: No destinations
specified. Adding 'file' destination by default.
Dec 22 23:58:50 paul hp-scan: io/hpmud/hpmud.c 608: [20227]
hpmud_probe_devices() bus=3
Dec 22 23:58:52 paul hp-scan: io/hpmud/hpmud.c 525:
[20227,17403,1000,1000,1000,1000] hpmud_device_open()
uri=hp:/usb/HP_LaserJet_3050?serial=00CNRK171590 iomode=4
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 425: Found interface
conf=0, iface=0, altset=1, index=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 387: Active kernel driver
on interface=0 ret=0
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 530: claimed 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 774: read actual device_id
successfully fd=1 len=173
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 556: released 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/hpmud.c 572: [20227]
hpmud_get_device_id() dd=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 425: Found interface
conf=0, iface=0, altset=1, index=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 387: Active kernel driver
on interface=0 ret=0
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 530: claimed 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 774: read actual device_id
successfully fd=1 len=173
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 556: released 7/1/2 interface
Dec 22 23:58:52 paul hp-scan: io/hpmud/hpmud.c 642: [20227]
hpmud_channel_open() dd=1 name=HP-MESSAGE
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 953: new HP-MESSAGE
channel=1 clientCnt=1 channelCnt=1
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 425: Found interface
conf=0, iface=0, altset=0, index=2
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 387: Active kernel driver
on interface=0 ret=0
Dec 22 23:58:52 paul hp-scan: io/hpmud/musb.c 530: claimed 7/1/3 interface
Dec 22 23:58:52 paul hp-scan: [0000] 00 00 00 08 01 00 00
20 .......
Dec 22 23:58:52 paul hp-scan: [0000]
04 .
Dec 22 23:58:56 paul hp-scan: io/hpmud/dot4.c 231: unable to read
Dot4ReverseReply header: Resource temporarily unavailable bytesRead=1
Dec 22 23:58:56 paul hp-scan: io/hpmud/dot4.c 319: invalid DOT4InitReply
retrying command...
Dec 22 23:58:56 paul hp-scan: [0000] 00 00 00 08 01 00 00
20 .......
Dec 22 23:59:00 paul hp-scan: io/hpmud/dot4.c 231: unable to read
Dot4ReverseReply header: Resource temporarily unavailable bytesRead=0
Dec 22 23:59:00 paul hp-scan: io/hpmud/dot4.c 330: invalid
DOT4InitReply: cmd=0, result=20
, revision=d0
Dec 22 23:59:00 paul hp-scan: io/hpmud/musb.c 968: removed HP-MESSAGE
channel=1 clientCnt=0 channelCnt=0
Dec 22 23:59:00 paul hp-scan: failed to open pml channel:
scan/sane/sclpml.c 391
Dec 22 23:59:00 paul hp-scan: hp-scan[20227]: error: SANE: Invalid
argument (code=4)
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 387: [20227] hpmud_exit()
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 361: device_cleanup:
device uri=hp:/usb/HP_LaserJet_3050?serial=00CNRK171590
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 373: device_cleanup:
close device dd=1...
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 553: [20227]
hpmud_device_close() dd=1
Dec 22 23:59:00 paul hp-scan: io/hpmud/musb.c 556: released 7/1/3 interface
Dec 22 23:59:00 paul hp-scan: io/hpmud/hpmud.c 375: device_cleanup: done
closing device dd=1
Dec 22 23:59:03 paul kernel: [1457013.180216] usb 2-1: USB disconnect,
device number 2
Dec 22 23:59:03 paul kernel: usb 2-1: USB disconnect, device number 2
Dec 22 23:59:03 paul udev-configure-printer: Disabled printer
ipp://localhost:631/printers/HP_LaserJet_3050 as the corresponding
device was unplugged or turned off
Dec 22 23:59:03 paul udev-configure-printer: Disabled printer
ipp://localhost:631/printers/HP_LaserJet_3050_fax as the corresponding
device was unplugged or turned off
Dec 22 23:59:03 paul systemd: Unit printer.target is not needed anymore.
Stopping.
Dec 22 23:59:03 paul systemd: Stopping Printer.
Dec 22 23:59:03 paul systemd: Stopped target Printer.
Dec 22 23:59:03 paul colord: device removed:
sysfs-Hewlett-Packard-HP_LaserJet_3050
Dec 22 23:59:32 paul kernel: [1457042.459547] usb 2-1: new high-speed
USB device number 3 using ehci-pci
Dec 22 23:59:32 paul kernel: usb 2-1: new high-speed USB device number 3
using ehci-pci
Dec 22 23:59:33 paul kernel: [1457042.576184] usb 2-1: New USB device
found, idVendor=03f0, idProduct=3217
Dec 22 23:59:33 paul kernel: [1457042.576188] usb 2-1: New USB device
strings: Mfr=1, Product=2, SerialNumber=3
Dec 22 23:59:33 paul kernel: [1457042.576190] usb 2-1: Product: HP
LaserJet 3050
Dec 22 23:59:33 paul kernel: [1457042.576192] usb 2-1: Manufacturer:
Hewlett-Packard
Dec 22 23:59:33 paul kernel: [1457042.576193] usb 2-1: SerialNumber:
00CNRK171590
Dec 22 23:59:33 paul kernel: usb 2-1: New USB device found,
idVendor=03f0, idProduct=3217
Dec 22 23:59:33 paul kernel: usb 2-1: New USB device strings: Mfr=1,
Product=2, SerialNumber=3
Dec 22 23:59:33 paul kernel: usb 2-1: Product: HP LaserJet 3050
Dec 22 23:59:33 paul kernel: usb 2-1: Manufacturer: Hewlett-Packard
Dec 22 23:59:33 paul kernel: [1457042.578963] usblp 2-1:1.0: usblp0: USB
Bidirectional printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:33 paul kernel: usb 2-1: SerialNumber: 00CNRK171590
Dec 22 23:59:33 paul kernel: usblp 2-1:1.0: usblp0: USB Bidirectional
printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:33 paul logger: loading HP Device 002 003
Dec 22 23:59:33 paul systemd: Starting Configure HP Plugged-In Printer...
Dec 22 23:59:33 paul systemd: Started Configure HP Plugged-In Printer.
Dec 22 23:59:33 paul systemd: Starting Printer.
Dec 22 23:59:33 paul systemd: Reached target Printer.
Dec 22 23:59:33 paul systemd: Starting Configure Plugged-In Printer...
Dec 22 23:59:33 paul systemd: Started Configure Plugged-In Printer.
Dec 22 23:59:33 paul colord: Device added:
sysfs-Hewlett-Packard-HP_LaserJet_3050
Dec 22 23:59:33 paul python: io/hpmud/hpmud.c 382: [20268] hpmud_init()
Dec 22 23:59:33 paul python: io/hpmud/musb.c 2160: [20268]
hpmud_make_usb_uri() bus=002 dev=003
Dec 22 23:59:33 paul python: io/hpmud/musb.c 2257: hpmud_make_usb_uri()
uri=hp:/usb/HP_LaserJet_3050?serial=00CNRK171590 bytes_read=44
Dec 22 23:59:33 paul python: io/hpmud/hpmud.c 387: [20268] hpmud_exit()
Dec 22 23:59:34 paul hp: io/hpmud/hpmud.c 382: [20283] hpmud_init()
Dec 22 23:59:34 paul hp[20283]: io/hpmud/hpmud.c 608: [20283]
hpmud_probe_devices() bus=3
Dec 22 23:59:34 paul hp[20283]: io/hpmud/hpmud.c 387: [20283] hpmud_exit()
Dec 22 23:59:34 paul kernel: [1457043.772835] usblp0: removed
Dec 22 23:59:34 paul kernel: usblp0: removed
Dec 22 23:59:34 paul kernel: [1457043.776951] usblp 2-1:1.0: usblp0: USB
Bidirectional printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:34 paul kernel: usblp 2-1:1.0: usblp0: USB Bidirectional
printer dev 3 if 0 alt 1 proto 2 vid 0x03F0 pid 0x3217
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 382: [20287] hpmud_init()
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 608: [20287]
hpmud_probe_devices() bus=1
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 608: [20287]
hpmud_probe_devices() bus=2
Dec 22 23:59:34 paul python: io/hpmud/hpmud.c 387: [20287] hpmud_exit()
Dec 22 23:59:34 paul udev-configure-printer: Re-enabled printer
ipp://localhost:631/printers/HP_LaserJet_3050
Dec 22 23:59:34 paul udev-configure-printer: Re-enabled printer
ipp://localhost:631/printers/HP_LaserJet_3050_fax
Dec 23 00:00:01 paul systemd: Starting Session 426 of user paul.
Dec 23 00:00:01 paul systemd: Started Session 426 of user paul.
[paul@paul ~]$