Working on sorting out some printing issues in MicroOS Desktop, I wanted to set-up teh same configuration on a clean, fresh TW host (running in Virtualbox, but that should not matter): Installation of Brother MFC9340CDW printer driver (worked) test print - filter failed changed cups log-level to debug, and got the relevant lines: [Job 4] 192.168.1.103=192.168.1.103 [Job 4] backendWaitLoop(snmp_fd=5, addr=0x561a87426138, side_cb=0x561a86529b80) [Job 4] Unable to auto-configure PostScript Printer - no bidirectional I/O available! [Job 4] PID 7447 (/usr/lib/cups/filter/commandtops) stopped with status 1. PID 7446 (/usr/lib/cups/cgi-bin/jobs.cgi) exited with no errors. [Job 4] PID 7448 (/usr/lib/cups/backend/lpd) exited with no errors. cupsdMarkDirty(----S) cupsdSetBusyState: newbusy="Active clients, printing jobs, and dirty files", busy="Active clients, printing jobs, and dirty files" [Job 4] Job stopped due to filter errors; please consult the /var/log/cups/error_log file for details. cupsdMarkDirty(---J-) (full log: https://paste.opensuse.org/39597437 ) Funny enough, the same printer works on my TW host..... .ppd files are the same, I could not spot a difference so far. Search in the net stated basically 'delete cups, gutenprint, etc and reinstall', but I feel that cant be the solution Hints anyone?