hplip-3.20.9 do not work on Ubuntu 20.4 ... cannot use Deskjet 2676 scanner

Give the output of

  systemctl list-units "ippusbxd*" | grep service

--
Brian.

Thierry Ordissimo <email address hidden> suggested
Removed ippusbxd :
sudo apt remove ippusbxd
sudo reboot

and retest!

I've done but it produces the same error, same problem ...

Running 'sudo apt-get install --assume-yes python-pyqt5'
Please wait, this may take several minutes...
error: Package install command failed with error code 100
Would you like to retry installing the missing package(s) (y=yes*, n=no, q=quit) ?

Same for the others dependencies ....

Following dependencies are not installed. HPLIP will not work if all REQUIRED dependencies are not installed and some of the HPLIP features will not work if OPTIONAL dependencies are not installed.
Package-Name Component Required/Optional
pyqt5-dbus gui_qt5 OPTIONAL
pyqt5 gui_qt5 REQUIRED
python-notify gui_qt5 OPTIONAL

So, then I reinstall ippusbxd with Synaptic

Now follow what you asked for ....

Inspiron-3481:~$ systemctl list-units "ippusbxd*" | grep service
  ippusbxd@001:007.service loaded active running Daemon to
make IPP-over-USB printers available as network printers
(001:007)
Thanks for your attention

Em dom, 2020-10-04 às 17:35 +0000, brian_p escreveu:
> Your question #693251 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/693251
>
> Status: Open => Needs information
> brian_p requested more information:Give the output of
> systemctl list-units "ippusbxd*" | grep service
> -- Brian.
>

You have purged ippusbxd? Ok, fine. How about putting the device on the
network with wireless or ethernet? Can you manage that?

Apologies. I failed to read when you said

> nspiron-3481:~$ systemctl list-units "ippusbxd*" | grep service
> ippusbxd@001:007.service loaded active running Daemon to
> make IPP-over-USB printers available as network printers

Em dom, 2020-10-04 às 19:35 +0000, brian_p escreveu:
> Your question #693251 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/693251
>
> Status: Open => Needs information
> brian_p requested more information:You have purged
> ippusbxd? Ok, fine.

But as the problem was not solved I install it again with
Synaptic.
> How about putting the device on thenetwork with wireless
> or ethernet? Can you manage that?

No idea .....:'(
When I plug the USB cable, the printer works
("driverless").My problem is with the scanner. No software
detects the scanner (Xsane v.0.999-8ubuntu2, Skanlite
v.2.1.0.1-2, Document scanner v.3.36.3-0ubuntu0.20.04.0)

Install sane-airscan.

  https://github.com/alexpevzner/sane-airscan

Perfectly installed sane-airscan but ... nothing detected

Although said it works with both, i tried:
Remove ippusbxd
Install ipp-usb

... nothing detected

Found the command (from libsane 1.0.29-0ubuntu5.2) : sane-
find-scanner

  # sane-find-scanner will now attempt to detect your
scanner. If the
  # result is different from what you expected, first make
sure your
  # scanner is powered up and properly connected to your
computer.

  # No SCSI scanners found. If you expected something
different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI
adapter.

could not open USB device 0x1d6b/0x0003 at 002:001: Access
denied (insufficient permissions)
could not open USB device 0x0cf3/0xe009 at 001:005: Access
denied (insufficient permissions)
could not open USB device 0x0bda/0x0129 at 001:004: Access
denied (insufficient permissions)
could not open USB device 0x0c45/0x671e at 001:003: Access
denied (insufficient permissions)
could not open USB device 0x046d/0xc077 at 001:002: Access
denied (insufficient permissions)
found USB scanner (vendor=0x03f0 [HP], product=0x0053
[DeskJet 2600 series]) at libusb:001:006
could not open USB device 0x1d6b/0x0002 at 001:001: Access
denied (insufficient permissions)

Thanks again ....

Em seg, 2020-10-05 às 12:50 +0000, brian_p escreveu:
> Your question #693251 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/693251
>
> Status: Open => Answered
> brian_p proposed the following answer:Install sane-
> airscan.
> https://github.com/alexpevzner/sane-airscan
>

> found USB scanner (vendor=0x03f0 [HP], product=0x0053
> [DeskJet 2600 series]) at libusb:001:006

The DeskJet 2600 series is supported by sane-airscan.

Let's stick with ipp-usb; it is more reliable than ippusbxd. Give
the outputs of

  systemctl list-units "ipp-usb*" | grep service

  scanimage -L

ALL scanner programs now working !!!!
Maybe i forget to turn off / on after installing airscan or
something foolish.
Thanks a lot for your time.
tlc@tlc-Inspiron-3481:~$ systemctl list-units "ipp-usb*" |
grep service ipp-usb.service loaded activating start start
Daemon for IPP over USB printer supporttlc@tlc-Inspiron-3481
:~$ scanimage -Ldevice `airscan:e0:HP DeskJet 2600 series
[00B4B4] (USB 1)' is a eSCL HP DeskJet 2600 series [00B4B4]
(USB 1) eSCL network scanner
Em seg, 2020-10-05 às 15:50 +0000, brian_p escreveu:
> Your question #693251 on HPLIP changed:
> https://answers.launchpad.net/hplip/+question/693251
>
> Status: Open => Needs information
> brian_p requested more information:
> > found USB scanner (vendor=0x03f0 [HP],
> > product=0x0053[DeskJet 2600 series]) at libusb:001:006
>
> The DeskJet 2600 series is supported by sane-airscan.
> Let's stick with ipp-usb; it is more reliable than
> ippusbxd. Givethe outputs of
> systemctl list-units "ipp-usb*" | grep service
> scanimage -L

> ALL scanner programs now working !!!!

Splendid!

> Maybe i forget to turn off / on after installing airscan or
> something foolish.

Maybe not so foolish. ippusbxd can sometimes leave a device in an
inconsistent state.

Don't forget to make this as solved, Luiz.

Cheers,

Brian.

All done