This is what I get in journalctl when trying to start firefox:
Jun 15 13:09:30 ubuntu dbus-daemon[7531]: [session uid=1000 pid=7528] Activating service name='org.freedesktop.systemd1' requested by ':1.60' (uid=1000 pid=8624 comm="/snap/bin/firefox " label="unconfined") Jun 15 13:09:30 ubuntu dbus-daemon[7531]: [session uid=1000 pid=7528] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1 Jun 15 13:09:30 ubuntu audit[8624]: AVC apparmor="DENIED" operation="capable" profile="/snap/core/13308/usr/lib/snapd/snap-confine" pid=8624 comm="snap-confine" capability=12 capname="net_admin" Jun 15 13:09:30 ubuntu audit[8624]: AVC apparmor="DENIED" operation="capable" profile="/snap/core/13308/usr/lib/snapd/snap-confine" pid=8624 comm="snap-confine" capability=38 capname="perfmon" Jun 15 13:09:30 ubuntu kernel: audit: type=1400 audit(1655262570.773:81): apparmor="DENIED" operation="capable" profile="/snap/core/13308/usr/lib/snapd/snap-confine" pid=8624 comm="snap-confine" capability=12 capname="net_admin" Jun 15 13:09:30 ubuntu kernel: audit: type=1400 audit(1655262570.773:82): apparmor="DENIED" operation="capable" profile="/snap/core/13308/usr/lib/snapd/snap-confine" pid=8624 comm="snap-confine" capability=38 capname="perfmon"
This is what I get in journalctl when trying to start firefox:
Jun 15 13:09:30 ubuntu dbus-daemon[7531]: [session uid=1000 pid=7528] Activating service name='org. freedesktop. systemd1' requested by ':1.60' (uid=1000 pid=8624 comm="/ snap/bin/ firefox " label="unconfined") p.systemd1' failed: Process org.freedesktop .systemd1 exited with status 1 "/snap/ core/13308/ usr/lib/ snapd/snap- confine" pid=8624 comm="snap-confine" capability=12 capname="net_admin" "/snap/ core/13308/ usr/lib/ snapd/snap- confine" pid=8624 comm="snap-confine" capability=38 capname="perfmon" 0.773:81) : apparmor="DENIED" operation="capable" profile= "/snap/ core/13308/ usr/lib/ snapd/snap- confine" pid=8624 comm="snap-confine" capability=12 capname="net_admin" 0.773:82) : apparmor="DENIED" operation="capable" profile= "/snap/ core/13308/ usr/lib/ snapd/snap- confine" pid=8624 comm="snap-confine" capability=38 capname="perfmon"
Jun 15 13:09:30 ubuntu dbus-daemon[7531]: [session uid=1000 pid=7528] Activated service 'org.freedeskto
Jun 15 13:09:30 ubuntu audit[8624]: AVC apparmor="DENIED" operation="capable" profile=
Jun 15 13:09:30 ubuntu audit[8624]: AVC apparmor="DENIED" operation="capable" profile=
Jun 15 13:09:30 ubuntu kernel: audit: type=1400 audit(165526257
Jun 15 13:09:30 ubuntu kernel: audit: type=1400 audit(165526257