libcx breaks CUPS printing

[David McKenna]

I have installed and have been using Netlabs CUPS and HPLIP for printing with no problems. Today I installed libcx and suddenly CUPS printing no longer works, with a 'filter failed' message. This is in the error log:

D [23/Jul/2016:21:10:31 +0500] [Job 67] Set job-printer-state-message to "Processing page 1...", current level=INFO
D [23/Jul/2016:21:10:31 +0500] [Job 67] prnt/hpcups/HPCupsFilter.cpp 575: cupsRasterOpen failed, fd = 0
D [23/Jul/2016:21:10:31 +0500] [Job 67] PID 106 (/@unixroot/usr/lib/cups/filter/pdftopdf.exe) exited with no errors.
D [23/Jul/2016:21:10:31 +0500] [Job 67] PID 108 (/@unixroot/usr/lib/cups/filter/gstoraster.exe) stopped with status 11.
D [23/Jul/2016:21:10:31 +0500] [Job 67] Hint: Try setting the LogLevel? to "debug" to find out more.
D [23/Jul/2016:21:10:31 +0500] [Job 67] PID 109 (/@unixroot/usr/lib/cups/filter/hpcups.exe) stopped with status 1.
D [23/Jul/2016:21:10:31 +0500] [Job 67] Hint: Try setting the LogLevel? to "debug" to find out more.
D [23/Jul/2016:21:10:31 +0500] [Job 67] PID 112 (/@unixroot/usr/lib/cups/backend/socket.exe) exited with no errors.
D [23/Jul/2016:21:10:31 +0500] [Job 67] End of messages
D [23/Jul/2016:21:10:31 +0500] [Job 67] printer-state=3(idle)
D [23/Jul/2016:21:10:31 +0500] [Job 67] printer-state-message="Filter failed"

Uninstalling libcx (using ANPM) then rebooting, and printing works again. Installed and uninstalled 3 times with the same result each time.

[Silvan Scherrer]

This is a really strange case, as non of the cups parts are using libcx. Could it be some other rpm are also updated/installed during the same libcx install?

[David McKenna]

If another rpm was updated, it wasn't in the list. I hesitated to report this because I thought it was strange too, so did it several times to check. Turns out I should have waited, because I did it again this morning and now it works! No idea what went wrong yesterday - please close this and sorry for the noise.