Apparmor prevents the driver from working on Debian 13 #50
Description
After completing the installation procedure in the wiki, the printer does yet work. When attempting to print, among other printing related debug messages, this appears in the system journal:
Feb 24 22:26:48 vbox kernel: audit: type=1400 audit(1771968408.877:153): apparmor="DENIED" operation="exec" class="file" profile="/usr/sbin/cupsd" name="/usr/local/bin/rastertocapt" pid=4314 comm="cups-exec" requested_mask="x" denied_mask="x" fsuid=7 ouid=0
I have found a workaround for this in the ancient ubuntu capt driver documentation: https://help.ubuntu.com/community/CanonCaptDrv190
You need to set Apparmor to complain mode for cups:
sudo aa-complain /usr/sbin/cupsd
For aa-complain the apparmor-utils package needs to be installed.
But after this, printing works. For a short time after poweing on the printer. But thats for another issue.
I dont know yet if this persists across reboots, but the proper solution is to extend the apparmor profile for cupsd to allow executing the capt filter binary.