I'm seeing this problem in Lubuntu 20.04. The system discovered my network printer automatically. (It chose A4 paper size, but I am in the US and use letter size. Changing to letter didn't matter for this problem.) When I print an error message pops up: "cups-pki-expired." In the logs, I see this:
Apr 27 00:32:58 moo kernel: [148547.069532] audit: type=1400 audit(1587965578.953:1031): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/sys/kernel/random/boot_id" pid=16330 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Apr 27 00:33:51 moo kernel: [148600.001307] kauditd_printk_skb: 5 callbacks suppressed Apr 27 00:33:51 moo kernel: [148600.001309] audit: type=1400 audit(1587965631.885:1037): apparmor="DENIED" operation="file_lock" profile="/usr/sbin/cupsd" name="/run/utmp" pid=16330 comm="cupsd" requested_mask="k" denied_mask="k" fsuid=0 ouid=0 ... Apr 27 00:33:58 moo kernel: [148607.079070] audit: type=1400 audit(1587965638.961:1044): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/sys/kernel/random/boot_id" pid=16330 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Apr 27 00:33:58 moo kernel: [148607.079096] audit: type=1400 audit(1587965638.961:1045): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/sys/kernel/random/boot_id" pid=16330 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Apr 27 00:33:58 moo kernel: [148607.079226] audit: type=1400 audit(1587965638.961:1046): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/sys/kernel/random/boot_id" pid=16330 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Apr 27 00:33:58 moo kernel: [148607.079261] audit: type=1400 audit(1587965638.961:1047): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/sys/kernel/random/boot_id" pid=16330 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 Apr 27 00:34:00 moo /hpfax: [16748]: error: Failed to create /var/spool/cups/tmp/.hplip -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1571531 Title: cupsd cause apparmor denials for /etc/ld.so.preload To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1571531/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
