Thank you, I'm learning new stuff. Besides, I like low level interfaces. Results were as expected - I think, except for the last step. After restarting cupsd "unconfined" disappeared. See below the output of commands you suggested:
janos@Andraslinux:~$ sudo aa-status [sudo] password for janos: apparmor module is loaded. You do not have enough privilege to read the profile set. janos@Andraslinux:~$ ps -Z `pidof cupsd` LABEL PID TTY STAT TIME COMMAND /usr/sbin/cupsd 823 ? Ss 0:00 /usr/sbin/cupsd -F janos@Andraslinux:~$ sudo bash -c "echo -n /usr/sbin/cupsd >/sys/kernel/security/apparmor/.remove" janos@Andraslinux:~$ sudo bash -c "echo -n /usr/lib/cups/backend/cups-pdf >/sys/kernel/security/apparmor/.remove" janos@Andraslinux:~$ sudo aa-status apparmor module is loaded. You do not have enough privilege to read the profile set. janos@Andraslinux:~$ ps -Z `pidof cupsd` LABEL PID TTY STAT TIME COMMAND unconfined 823 ? Ss 0:00 /usr/sbin/cupsd -F janos@Andraslinux:~$ sudo restart cups cups start/running, process 18702 janos@Andraslinux:~$ ps -Z `pidof cupsd` LABEL PID TTY STAT TIME COMMAND /usr/sbin/cupsd 18702 ? Ss 0:00 /usr/sbin/cupsd -F Nevertheless, I tried to print with Lexmark, but same result (printer wakes up, but then segfault). Here is dmesg: [ 3124.613956] type=1400 audit(1371215611.840:32): apparmor="STATUS" operation="profile_load" name="/usr/lib/cups/backend/cups-pdf" pid=18805 comm="apparmor_parser" [ 3124.614896] type=1400 audit(1371215611.840:33): apparmor="STATUS" operation="profile_load" name="/usr/sbin/cupsd" pid=18805 comm="apparmor_parser" [ 3186.971241] printdriver[18826]: segfault at 0 ip (null) sp bfc266dc error 4 in printdriver[8048000+b000] Another point: I booted up to the old, FC3 version, and Lexmark prints without segfault. As I mention, print files, etc. are exact copies in both FC3 boot or Ubuntu 13.04 boot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1187970 Title: apparmor prevents custom printer driver from executing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1187970/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
