printing: Filter failed

[opti999]

Submission type

• [ x] Bug report

Package name & version you are having issues with or have a request for

hplip 3.16.8-1

Used repositories

core, main, apps

Expected behaviour

print document

Actual behaviour

Error on using printer: HP LaserJet Pro MFP M426fdw
Error message was: Filter failed
caused by: used python version
and ident errors in vi /usr/lib/cups/filter/hpps

cat /var/log/cups/error_log
D [08/Sep/2016:13:37:27 +0200] [Job 5] backendWaitLoop(snmp_fd=5, addr=0x55ad0b7875c8, side_cb=0x55ad0a10c210)
D [08/Sep/2016:13:37:27 +0200] [Job 5] : ERROR: Error importing HPLIP modules:4930 No module named cupsext
D [08/Sep/2016:13:37:27 +0200] [Job 5] PID 4930 (/usr/lib/cups/filter/hpps) stopped with status 1.
D [08/Sep/2016:13:37:27 +0200] [Job 5] Hint: Try setting the LogLevel to "debug" to find out more.
D [08/Sep/2016:13:37:27 +0200] [Job 5] PID 4931 (/usr/lib/cups/backend/socket) exited with no errors.
...
D [08/Sep/2016:13:37:27 +0200] [Job 5] Wrote 2 pages...
D [08/Sep/2016:13:37:27 +0200] [Job 5] PID 4933 (pstops) exited with no errors.
D [08/Sep/2016:13:37:27 +0200] [Job 5] PID 4932 (gs) exited with no errors.
D [08/Sep/2016:13:37:27 +0200] [Job 5] PID 4929 (/usr/lib/cups/filter/pdftops) exited with no errors.
D [08/Sep/2016:13:37:27 +0200] [Job 5] End of messages
D [08/Sep/2016:13:37:27 +0200] [Job 5] printer-state=3(idle)
D [08/Sep/2016:13:37:27 +0200] [Job 5] printer-state-message="Filter failed"
D [08/Sep/2016:13:37:27 +0200] [Job 5] printer-state-reasons=none

http://hplipopensource.com/node/372 says:

Extension modules are missing from the current Python path "/usr/lib/python/dist-packages".
This happens when HPLIP is installed using one python version and you are running HPLIP using another python version.
For example, HPLIP was installed using python2.x and running the tools using python3.x

locate cupsext.so
/usr/lib/python3.5/site-packages/cupsext.so

ls -al /usr/bin/python
lrwxrwxrwx 1 root root 9 3. Jul 23:49 /usr/bin/python -> python2.7

switch active python version
rm /usr/bin/python
ln -s /usr/bin/python3.5 /usr/bin/python

set debug in cups.conf
vi /etc/cups/cupsd.conf
LogLevel debug

systemctl restart cups-browsed.service

cat /var/log/cups/error_log
D [14/Sep/2016:14:21:46 +0200] [Job 22] Running command line for gs: gs -q -dNOPAUSE -dBATCH -dSAFER -dNOMEDIAATTRS -sDEVICE=ps2write -sOUTPUTFILE=%stdout -dLanguageLevel=3 -r600 -dCompressFonts=false -dNoT3CCITT -dNOINTERPOLATE -c 'save pop' -f /var/spool/cups/tmp/023f457df757e
D [14/Sep/2016:14:21:46 +0200] [Job 22] Started filter gs (PID 9207)
D [14/Sep/2016:14:21:46 +0200] [Job 22] File "/usr/lib/cups/filter/hpps", line 194
D [14/Sep/2016:14:21:46 +0200] [Job 22] for x in szKeyInitials:
D [14/Sep/2016:14:21:46 +0200] [Job 22] ^
D [14/Sep/2016:14:21:46 +0200] [Job 22] TabError: inconsistent use of tabs and spaces in indentation
D [14/Sep/2016:14:21:46 +0200] [Job 22] Started filter pstops (PID 9208)
D [14/Sep/2016:14:21:46 +0200] [Job 22] PID 9205 (/usr/lib/cups/filter/hpps) stopped with status 1.
D [14/Sep/2016:14:21:46 +0200] [Job 22] Hint: Try setting the LogLevel to "debug" to find out more.
D [14/Sep/2016:14:21:46 +0200] [Job 22] PID 9206 (/usr/lib/cups/backend/socket) exited with no errors.

/usr/lib/cups/filter/hpps with errors in Ident (^I).
Changed the ident, maybe its wrong, but printer works.

vi /usr/lib/cups/filter/hpps

 192      else:$
   193          szKeyInitials = ['HPFIDigit', 'HPSEDigit', 'HPTHDigit', 'HPFTDigit']                                 $
   194          for x in szKeyInitials:$
   195             try:$
   196                 secpin += opts[x]$
   197             except KeyError:$
   198                 secpin += '0'$
   199  $
   200      os.write(output_fd, to_bytes_utf8('@PJL SET HOLDKEY="%s"\x0a' % secpin))$

Steps to reproduce the problem

…

System info link created by Octopi > Tools > SysInfo

https://gist.github.com/60801265d7e3217d4d4e08eb13265b99

[demmm]

Looking at your output, seems you are effected by this bug:
https://bugs.launchpad.net/hplip/+bug/1618398

I'll rebuild with the patch mentioned in the above report.

[demmm]

Please check if patched hplip fixes your issue:

sudo pacman -U http://kaosx.tk/repo/build/hplip-3.16.8-2-x86_64.pkg.tar.xz

[opti999]

Thank you for your quick response!
The patched hplip works like expected.
But the link to python3 must be set by hand.
ln -s /usr/bin/python3.5 /usr/bin/python