LPR works fine from bash if I print to pdf then from firefox and then go to bash and lpr the saved pdf, but can't print from firefox dialog using LPR because apparmor is mis-configured for firefox. See denied for cups below:
[ 3827.575630] audit: type=1326 audit(1675052924.296:772): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.firefox.firefox pid=10965 comm="sed" exe="/usr/bin/sed" sig=0 arch=c000003e syscall=93 compat=0 ip=0x7f104fd5339b code=0x50000
[ 3827.575635] audit: type=1326 audit(1675052924.296:773): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.firefox.firefox pid=10965 comm="sed" exe="/usr/bin/sed" sig=0 arch=c000003e syscall=93 compat=0 ip=0x7f104fd5339b code=0x50000
[ 3827.687267] audit: type=1326 audit(1675052924.408:774): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.firefox.firefox pid=10967 comm="sed" exe="/usr/bin/sed" sig=0 arch=c000003e syscall=93 compat=0 ip=0x7fef130ef39b code=0x50000
[ 3827.687273] audit: type=1326 audit(1675052924.408:775): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.firefox.firefox pid=10967 comm="sed" exe="/usr/bin/sed" sig=0 arch=c000003e syscall=93 compat=0 ip=0x7fef130ef39b code=0x50000
[ 3829.953169] audit: type=1326 audit(1675052926.672:776): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.firefox.firefox pid=10810 comm="firefox" exe="/snap/firefox/2277/usr/lib/firefox/firefox" sig=0 arch=c000003e syscall=314 compat=0 ip=0x7f77e1b6073d code=0x50000
[ 3873.535809] audit: type=1400 audit(1675052970.255:777): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm=4267494F5468727E506F6F6C202331 requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3873.536042] audit: type=1400 audit(1675052970.255:778): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm=4267494F5468727E506F6F6C202331 requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3873.538696] audit: type=1400 audit(1675052970.259:779): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm=4267494F5468727E506F6F6C202331 requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3873.547989] audit: type=1400 audit(1675052970.267:780): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3873.690874] audit: type=1326 audit(1675052970.411:781): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.firefox.firefox pid=11932 comm=49736F6C617465642057656220436F exe="/snap/firefox/2277/usr/lib/firefox/firefox" sig=0 arch=c000003e syscall=314 compat=0 ip=0x7f24a080973d code=0x50000
[ 3878.480397] audit: type=1400 audit(1675052975.199:782): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.480403] audit: type=1400 audit(1675052975.199:783): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.571399] audit: type=1400 audit(1675052975.291:784): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.640817] audit: type=1400 audit(1675052975.359:785): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.686814] audit: type=1400 audit(1675052975.407:786): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.737781] audit: type=1400 audit(1675052975.455:787): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.788382] audit: type=1400 audit(1675052975.507:788): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.861731] audit: type=1400 audit(1675052975.579:789): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.895417] audit: type=1400 audit(1675052975.615:790): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.948809] audit: type=1400 audit(1675052975.667:791): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3878.999210] audit: type=1400 audit(1675052975.719:792): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
[ 3879.050229] audit: type=1400 audit(1675052975.767:793): apparmor="DENIED" operation="connect" profile="snap.firefox.firefox" name="/run/cups/cups.sock" pid=10810 comm="firefox" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=0
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: apparmor 3.0.4-2ubuntu2.1
ProcVersionSignature: Ubuntu 5.15.0-58.64-generic 5.15.74
Uname: Linux 5.15.0-58-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sun Jan 29 23:30:40 2023
InstallationDate: Installed on 2020-11-14 (807 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdline: BOOT_IMAGE=/boot/vmlinuz-5.15.0-58-generic root=UUID=269bcfeb-c6e9-4e04-9aa3-9b7d45eca554 ro quiet splash vt.handoff=7
SourcePackage: apparmor
UpgradeStatus: Upgraded to jammy on 2023-01-20 (9 days ago)
