I’ve been trying to print a small file from TW to my HP 6500 AIO WiFi printer with no luck, so I tried it from this 13.2 system (upgraded from 13.1 and fully updated) - same problem. Other systems on the LAN (13.1 and Win7) print OK.
The CUPS status page says the printer is paused, accepting jobs, not shared, and the state is “/usr/lib/cups/backend/hp failed”. If I resume the printer, I get the popups saying a job has started and finished, but no action on the printer itself and it pauses again with the file still queued. Looking at the files in /var/log/cups I see no errors, only normal start/finish entries.
My problem is solved, but not by logic. The only change applied to this 13.2 system was the patch to ‘file’, and it works?!?!
However in the meantime I had updated the firmware in the WiFi router (ASUS RT-AC66U), so I am thinking it was a networking problem. The failing systems were both WiFi connected, while the working ones were hard-wired.