"safely remove" SD card immediately re-mounted

[traveller42]

Hello,
Having just installed Jammy, my main annoyance is that the UI to "safely remove" (i.e. unmount) a removable storage device doesn't really work. It does the unmount but the device is immediately re-mounted again. Here's the entries from syslog.

Jun 13 12:30:27 orion kernel: [343234.328540] audit: type=1400 audit(1655116227.430:7021): apparmor="DENIED" operation="open" profile="snap.firefox.firefox" name="/etc/fstab" pid=531159 comm="firefox" requested_mask="r" denied_mask="r"
fsuid=1026 ouid=0
Jun 13 12:30:27 orion kernel: [343234.334081] audit: type=1400 audit(1655116227.438:7022): apparmor="DENIED" operation="open" profile="snap.firefox.firefox" name="/run/mount/utab" pid=531159 comm="firefox" requested_mask="r" denied_mask
="r" fsuid=1026 ouid=0
Jun 13 12:30:23 orion rtkit-daemon[1529]: Supervising 1 threads of 1 processes of 1 users.
Jun 13 12:30:27 orion udisksd[912]: Cleaning up mount point /media/jon/3563-6562 (device 179:1 is not mounted)
Jun 13 12:30:27 orion systemd[1]: media-jon-3563\x2d6562.mount: Deactivated successfully.
Jun 13 12:30:27 orion udisksd[912]: Unmounted /dev/mmcblk0p1 on behalf of uid 1026
Jun 13 12:30:27 orion kernel: [343234.405014] mmcblk0: p1
Jun 13 12:30:27 orion systemd-udevd[663001]: mmcblk0p1: Process '/usr/bin/unshare -m /usr/bin/snap auto-import --mount=/dev/mmcblk0p1' failed with exit code 1.
Jun 13 12:30:27 orion udisksd[912]: Mounted /dev/mmcblk0p1 at /media/jon/3563-6562 on behalf of uid 1026
Jun 13 12:30:27 orion kernel: [343234.588265] audit: type=1400 audit(1655116227.690:7023): apparmor="DENIED" operation="open" profile="snap.firefox.firefox" name="/etc/fstab" pid=531159 comm="firefox" requested_mask="r" denied_mask="r"
fsuid=1026 ouid=0
Jun 13 12:30:27 orion kernel: [343234.592793] audit: type=1400 audit(1655116227.694:7024): apparmor="DENIED" operation="open" profile="snap.firefox.firefox" name="/run/mount/utab" pid=531159 comm="firefox" requested_mask="r" denied_mask
="r" fsuid=1026 ouid=0


I have to unmount the SD card manually - which fortunately doesn't automatically re-mount.

Has anyone seen anything like this?

Thanks in advance

Jon

[Snowhog]

Haven't had my morning quota of coffee yet, but from what you've posted from syslog, it "appears" that Firefox is involved in the SD getting remounted? Why would that be? Hmm.

[claydoh]

Haven't had my morning quota of coffee yet, but from what you've posted from syslog, it "appears" that Firefox is involved in the SD getting remounted? Why would that be? Hmm.

I think this is a symptom, not a cause, it *may* be related to a bug on systemd /udev services.

https://bugs.launchpad.net/ubuntu/+s...x/+bug/1971955
https://bugs.launchpad.net/ubuntu/+s...d/+bug/1966203

Some service or udev rule may be causing it to call the unshare/snapd command