[SCANNER] hplip error and scanner issue

[cluster]

Description: KDE neon User Edition 5.15
Release: 18.04
Codename: bionic

Device: Samsung C480 FW - connected via USB
after a new installation i have problems with printer & scanner ...

Apr 16 10:15:27 user /hpfax[1117]: [1117]: error: Failed to create /var/spool/cups/tmp/.hplip
and:
Apr 16 10:24:31 user scanimage[1776]: io/hpmud/model.c 532: no sung_c48x_series attributes found in /usr/share/hplip/data/models/models.dat
Apr 16 10:24:31 user scanimage[1776]: io/hpmud/model.c 543: no sung_c48x_series attributes found in /usr/share/hplip/data/models/unreleased

sane-find-scanner find and shows the device, scanimage -L do not find any scanner device
I have also added a udev rule with vendor & product ID, for testing chmod device to 666 and chown also to my user ... nothing changed

after a reboot cups status shows:
Failed to create /var/spool/cups/tmp/.hplip

If I do a:
service cups stop && service cups start
it works without Failed to create ...

but it's gone after a reboot and set back to Failed to create /var/spool/cups/tmp/.hplip

I have tried:
sudo apt remove hplip
sudo apt install hplip
also removed printer from KDE systemsettings

nothing changed ... still get a Failed to create /var/spool/cups/tmp/.hplip message
and sane (also xsane) does not work ...

how can I solve this issue?

[claydoh]

https://ubuntuforums.org/showthread.php?t=2395606

Not sure if you want to undo the udev rule you edited, however.


As to the cups issue, I cannot tell why hplip is even involved with this (yes, HP owns Samsung now, but I don't see support for them in hplip,yet)
The error itself may be safe to ignore.

sudo apt purge hplip-* hplip libsane-hpaio

should get rid of all the bits

[cluster]

https://ubuntuforums.org/showthread.php?t=2395606

Not sure if you want to undo the udev rule you edited, however.

As to the cups issue, I cannot tell why hplip is even involved with this (yes, HP owns Samsung now, but I don't see support for them in hplip,yet)
The error itself may be safe to ignore.

sudo apt purge hplip-* hplip libsane-hpaio

should get rid of all the bits

cool, thank you!

scanimage -L
device `xerox_mfp:libusb:001:003' is a Samsung C48x Series multi-function peripheral

[cluster]

hmm, something is still strange ... it just work from the terminal w/
scanimage -L
it start the device scan process (I can hear the scanner moves)

while simple-scan or xscan crashes the scanner pipe ... it just shows the right scanner device on startup but if I click the scan button, it's gone ... lost connection to the scanner

[cluster]

some more details ...
when starting xsane first time I can hear the scanner moves, but when I click the scan button xsane does not work anymore - also a scanimage -L does not work after that, it seems the USB device is blocked after scanner check.

DVE-2018-0001, retrying transaction with reduced feature level UDP.]
Apr 17 10:35:28 user upowerd[1221]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0
Apr 17 10:35:28 user upowerd[1221]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0
Apr 17 10:35:33 user upowerd[1221]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0
Apr 17 10:36:01 user upowerd[1221]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0

[cluster]

hmm - hplip bugfix in progress ...
https://bugs.launchpad.net/hplip/+bug/1819742

but it looks more like a USB bind/unbind issue ...
same here w/ linux mint:
https://www.linuxmintusers.de/index.php?topic=53599.30