Can you, in addition to the steps of comment #3, reboot your system and then follow the instructions of "CUPS error_log" and "Capturing print job data" in https://wiki.ubuntu.com/DebuggingPrintingProblems for the first two jobs after boot, one which prints and one which does not print.
If after running the command "sudo aa-complain cupsd" you can print normally, run
sudo aa-enforce cupsd
and follow the instructions in the beginning of this comment.
Can you, in addition to the steps of comment #3, reboot your system and then follow the instructions of "CUPS error_log" and "Capturing print job data" in https:/ /wiki.ubuntu. com/DebuggingPr intingProblems for the first two jobs after boot, one which prints and one which does not print.
If after running the command "sudo aa-complain cupsd" you can print normally, run
sudo aa-enforce cupsd
and follow the instructions in the beginning of this comment.