HPLIP

Scanning "failed to open scan channel:" Device busy

Asked by Joppe

Having read articles #30449 and #56866 I'm having a feeling that this may refer to same problem.

Using an HP OfficeJet R45. Works fine to print on, but fails with scanning.

Downloaded latest HPLIP, compiled and installed, same error.
Running system Ubuntu 8.04.

Any suggestions?

/Carl Wagner
=======================================================

First the output of hp-info:
Any suggestions?

/Carl Wagner
=======================================================
Initializing. Please wait...

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

Basic system information:
Linux anna 2.6.24-23-generic #1 SMP Mon Jan 26 01:04:16 UTC 2009 x86_64 GNU/Linux

Distribution:
ubuntu 8.04

HPOJ running?
No, HPOJ is not running (OK).

Checking Python version...
OK, version 2.5.2 installed

Checking PyQt 4.x version...
OK, version 4.3.3 installed.

Checking for CUPS...
Status: scheduler is running
Version: 1.3.7
error_log is set to level: debug

Checking for dbus/python-dbus...
dbus daemon is running.
python-dbus version: 0.82.4

------------------------------------
| COMPILE AND RUNTIME DEPENDENCIES |
------------------------------------

note: To check for compile-time only dependencies, re-run hp-check with the -c parameter (ie, hp-check -c).
note: To check for run-time only dependencies, re-run hp-check with the -r parameter (ie, hp-check -r).

Checking for dependency: CUPS - Common Unix Printing System...
OK, found.

Checking for dependency: CUPS DDK - CUPS driver development kit...
OK, found.

Checking for dependency: CUPS devel- Common Unix Printing System development files...
OK, found.

Checking for dependency: DBus - Message bus system...
OK, found.

Checking for dependency: gcc - GNU Project C and C++ Compiler...
OK, found.

Checking for dependency: GhostScript - PostScript and PDF language interpreter and previewer...
OK, found.

Checking for dependency: libcrypto - OpenSSL cryptographic library...
OK, found.

Checking for dependency: libjpeg - JPEG library...
OK, found.

Checking for dependency: libnetsnmp-devel - SNMP networking library development files...
OK, found.

Checking for dependency: libpthread - POSIX threads library...
OK, found.

Checking for dependency: libtool - Library building support services...
OK, found.

Checking for dependency: libusb - USB library...
OK, found.

Checking for dependency: make - GNU make utility to maintain groups of programs...
OK, found.

Checking for dependency: PIL - Python Imaging Library (required for commandline scanning with hp-scan)...
OK, found.

Checking for dependency: ppdev - Parallel port support kernel module....
OK, found.

Checking for dependency: PyQt 4- Qt interface for Python (for Qt version 4.x)...
OK, found.

Checking for dependency: PyQt 4 DBus - DBus Support for PyQt4...
OK, found.

Checking for dependency: Python ctypes - A foreign function library for Python...
OK, found.

Checking for dependency: Python DBus - Python bindings for DBus...
OK, found.

Checking for dependency: Python devel - Python development files...
OK, found.

Checking for dependency: Python XML libraries...
OK, found.

Checking for dependency: Python 2.3 or greater - Required for fax functionality...
OK, found.

Checking for dependency: Python 2.2 or greater - Python programming language...
OK, found.

Checking for dependency: Reportlab - PDF library for Python...
OK, found.

Checking for dependency: SANE - Scanning library...
OK, found.

Checking for dependency: SANE - Scanning library development files...
OK, found.

Checking for dependency: scanimage - Shell scanning program...
OK, found.

Checking for dependency: xsane - Graphical scanner frontend for SANE...
OK, found.

----------------------
| HPLIP INSTALLATION |
----------------------

Currently installed HPLIP version...
HPLIP 3.9.2 currently installed in '/usr/share/hplip'.

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

[hplip]
version=3.9.2

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/hpijs/HP
ppdbase=/usr/share/ppd/hpijs
doc=/usr/share/doc/hplip-3.9.2
icon=/usr/share/applications
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv/hp/

# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
pp-build=yes
gui-build=yes
scanner-build=yes
fax-build=no
dbus-build=no
cups11-build=no
doc-build=yes
shadow-build=no
foomatic-drv-install=yes
foomatic-ppd-install=no
foomatic-rip-hplip-install=no
internal-tag=3.9.2.49
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes

Current contents of '~/.hplip/hplip.conf' file:
[last_used]
device_uri = hp:/par/OFFICEJET_R40?device=/dev/parport0

[fax]
email_address =
voice_phone =

[installation]
version = 3.9.2.49
date_time = 03/23/09 03:15:59

-------------------------------
| DISCOVERED PARALLEL DEVICES |
-------------------------------

  Device URI Model
  -------------------------------- ----------------
  hp:/par/OFFICEJET_R40?device=/de HP OFFICEJET R40
  v/parport0

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

No devices found.

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

HPOJR45
-------
Type: Printer
Installed in HPLIP?: Yes, using the hp: CUPS backend.
Device URI: hp:/par/OFFICEJET_R40?device=/dev/parport0
PPD: /etc/cups/ppd/HPOJR45.ppd
PPD Description: HP Officejet r45 hpijs, hpijs 3.9.2
Printer status: printer HPOJR45 is idle. enabled since Mon 23 Mar 2009 04:52:03 AM CET
Communication status: Good

----------------------
| SANE CONFIGURATION |
----------------------

'hpaio' in '/etc/sane.d/dll.conf'...
OK, found. SANE backend 'hpaio' is properly set up.

Checking output of 'scanimage -L'...
device `hpaio:/par/OFFICEJET_R40?device=/dev/parport0' is a Hewlett-Packard OFFICEJET_R40 all-in-one

---------------------
| PYTHON EXTENSIONS |
---------------------

Checking 'cupsext' CUPS extension...
OK, found.

Checking 'pcardext' Photocard extension...
OK, found.

Checking 'hpmudext' I/O extension...
OK, found.

Checking 'scanext' SANE scanning extension...
OK, found.

=================================
$ scanimage -L
device `hpaio:/par/OFFICEJET_R40?device=/dev/parport0' is a Hewlett-Packard OFFICEJET_R40 all-in-one

$ scanimage -L
After having run scanimage the following message shows up: (as well as for xsane)
scanimage: failed to open scan channel: scan/sane/hpaio.c 657
$ xsane
xsane: failed to open scan channel: scan/sane/hpaio.c 657
=================================
/etc/cups/printers.conf:
# Printer configuration file for CUPS v1.3.7
# Written by cupsd on 2009-03-23 04:52
<Printer HPOJR45>
Info OfficeJet R45 All-IN-ONE
Location At main fileserver Bromma
DeviceURI hp:/par/OFFICEJET_R40?device=/dev/parport0
State Idle
StateTime 1237780323
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
OpPolicy default
ErrorPolicy retry-job
</Printer>
=================================
/etc/cups/ppd/HPOJR45.ppd:
*PPD-Adobe: "4.3"
*% PPD file for HP Officejet r45 hpijs with CUPS.
*% Created by the CUPS PPD Compiler v1.2.0.
*% (c) 2004-2008 Copyright Hewlett-Packard Development Company, LP
*FormatVersion: "4.3"
*FileVersion: "hpijs 3.9.2"
*LanguageVersion: English
*LanguageEncoding: ISOLatin1
*PCFileName: "hp-officejet_r45-hpijs.ppd"
*Product: "(HP Officejet r45 All-in-one Printer)"
*Manufacturer: "HP"
*ModelName: "HP Officejet r45 hpijs"
*ShortNickName: "HP Officejet r45 hpijs"
*NickName: "HP Officejet r45 hpijs, hpijs 3.9.2"
*PSVersion: "(3010.000) 705"
*PSVersion: "(3010.000) 707"
*PSVersion: "(3010.000) 815"
*PSVersion: "(3010.000) 853"
*LanguageLevel: "3"
*ColorDevice: True
*DefaultColorSpace: RGB
*FileSystem: False
*Throughput: "1"
*LandscapeOrientation: Plus90
*% Driver-defined attributes...
*DefaultResolution: 600dpi*FoomaticRIPOptionSetting PageSize=Custom: " -dDEVICEW
IDTHPOINTS=0 -dD&&
EVICEHEIGHTPOINTS=0"
*End
*FoomaticIDs: "HP-DeskJet_810C hpijs"
...
=================================
The printer used is an R45, but the one in setup is an R40. This probably wont matter since the only differences I have found is that one of them (R40) is american and the other (R45) is European.

=================================
/var/log/messages says the same as hp-check.

For the convenience I set (group)permissions friendly while debugging.

But scanning remains unavailable.

/Carl

Question information

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Revision history for this message
Joppe (joppe-agusta) said : 		#1

Had the printer earlier connected to on older PC-hardware with same distro (Ubuntu 8.04) and worked fine with both scanning and printing, but then with HPOJ... But, that is now gone. Both HPOJ and the computer... =(

Revision history for this message
Aaron Albright (albrigha-deactivatedaccount) said : 		#2

Carl,

Scanning -should- work over parallel. However the OfficeJet R45 has reached "Full (End of support)". You can get more information about the support levels for this device here:

http://hplipopensource.com/hplip-web/models/officejet/officejet_r45.html

We are no longer testing or providing technical assistance with this product. However looking over your hp-check I don't see any errors that would stop scanning from working..you could check in the BIOS to be sure that your parallel is configured correctly?

Sorry I couldn't give you any better direction!

Aaron

Revision history for this message
Joppe (joppe-agusta) said : 		#3

Thank you for rapid answer =)

At least we both agree on that the setup is made proper to what we know to be a working way.

Now, one way could be to uninstall HP LIP and install HPOJ. That worked with this printer and the same distribution (Ubuntu 8.04).

But, the hardware is not the same, so it may or may not work just because of that.

Since the low level system somehow reports "Device busy", this may very well be the case that the hardware just wont do it.

Due to the physical environment (and the fact that the old computer died) I wanted to connect it on the computer I'm working on. Which is a pretty new Dell PowerEdge T105. This motherboard however lacks parallel port, so I bought one... A long story short: the only card I found that could work is a "DSP-1000" PCIe (Parallel + dual serial) The port is recognized and works well for the printer, including the toolbox display/status functions. So somehow the hardware IS working. But not scanning.

The questions arising now, are
1. What are the requirements for the parport to have HPLIP working? ECP/EPP? Other?
2. Since the scanner channel gets a Device Busy error, does that mean that some kind of fight for the port happened?
3. Not knowing much of the lowlevel system, what could report the busy signal, how to debug it?

Is there any known parallel port cards to work with this scanner?

I'm now trying to find the right approach and action to the problem...

Thank you
/Carl

Revision history for this message
Aaron Albright (albrigha-deactivatedaccount) said : 		#4

For information on troubleshooting parallel you can go here:

http://hplipopensource.com/node/217

Usually device busy means that the device isn't either sending a busy status code or is not responding correctly to an HPLIP status request.

For lower level troubleshooting you may want to refer to your linux distro documentation. If there is a hardware or kernel problem we can't assist in troubleshooting.

It's possible that the third party parallel port card is not allowing the correct type of communication--we don't test on these devices so I don't have any suggestions on what cards might work. I do know however that in the past HP JetDirect devices that connect to a parallel connection have worked with scanning and printing over the network.

HP JetDirect 500X is one model I've tested on several years ago. However our technical support for parallel is limited at this point because of the age of the device, etc.

Hope this helps!

Aaron

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