When I launch the Ubuntu snap store from my favorites, the following lines appear in dmesg.
[38514.879381] audit: type=1400 audit(1588562964.269:5985): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/mime.cache" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.879402] audit: type=1400 audit(1588562964.269:5986): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/globs2" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.879426] audit: type=1400 audit(1588562964.269:5987): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/magic" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.879443] audit: type=1400 audit(1588562964.269:5988): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/aliases" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.879459] audit: type=1400 audit(1588562964.269:5989): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/subclasses" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.879474] audit: type=1400 audit(1588562964.269:5990): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/icons" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.879488] audit: type=1400 audit(1588562964.269:5991): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/generic-icons" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.880255] audit: type=1400 audit(1588562964.269:5992): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/etc/gnome/defaults.list" pid=17441 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.961031] audit: type=1400 audit(1588562964.349:5993): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/mime.cache" pid=2467 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[38514.961038] audit: type=1400 audit(1588562964.349:5994): apparmor="DENIED" operation="open" profile="snap.snap-store.ubuntu-software" name="/var/lib/snapd/hostfs/usr/share/mime/globs2" pid=2467 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Adding these lines:
/var/lib/snapd/hostfs/usr/share/mime/* r,
/etc/gnome/defaults.list r,
to /var/lib/snapd/apparmor/profiles/snap.snap-store.ubuntu-software
made the messages go away.
Further notes. https://ubuntuforums.org/showthread.php?t=2442426
Sent patch here. /bazaar. launchpad. net/~sklein/ snapd/snapd/ revision/ 4829
https:/