$ apt policy apparmor # After enabling -proposed but before upgrading
apparmor:
Installed: 4.0.1really4.0.1-0ubuntu0.24.04.6
Candidate: 4.0.1really4.0.1-0ubuntu0.24.04.6
Version table:
4.0.1really4.0.1-0ubuntu0.24.04.7 100
100 http://archive.ubuntu.com/ubuntu noble-proposed/main amd64 Packages
*** 4.0.1really4.0.1-0ubuntu0.24.04.6 500
500 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages
100 /var/lib/dpkg/status
4.0.0-beta3-0ubuntu3 500
500 http://archive.ubuntu.com/ubuntu noble/main amd64 Packages
Thumbnail generation for a downloaded image fails.
The upgrade to 0ubuntu0.24.04.7 produces a /var/run/reboot-required
file, as well as a "The computer needs to restart to finish installing
updates." prompt from the GUI software updater.
After the upgrade and reboot:
$ apt policy apparmor
apparmor:
Installed: 4.0.1really4.0.1-0ubuntu0.24.04.7
Candidate: 4.0.1really4.0.1-0ubuntu0.24.04.7
Version table:
*** 4.0.1really4.0.1-0ubuntu0.24.04.7 100
100 http://archive.ubuntu.com/ubuntu noble-proposed/main amd64 Packages
100 /var/lib/dpkg/status
4.0.1really4.0.1-0ubuntu0.24.04.6 500
500 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages
4.0.0-beta3-0ubuntu3 500
500 http://archive.ubuntu.com/ubuntu noble/main amd64 Packages
aa-status output shows that nautilus now has an unconfined profile, and
~/.cache/thumbnails/fail/gnome-thumbnail-factory no longer exists.
The previously downloaded image now thumbnails correctly, and a newly
downloaded image also thumbnails correctly.
Creating a deliberately broken image file:
$ echo "This is not an image file." > rene_magritte.png
Nautilus generates an entry in ~/.cache/thumbnails/fail/gnome-thumbnail-
factory for the non-image file.
Upon reinstalling the update (apt install --reinstall apparmor), logging out,
and logging back in:
- The failed cache entry still exists, with the same filesystem timestamp as
before
- No /var/run/reboot-required or similar file exists
** Tags removed: verification-needed-noble
** Tags added: verification-done-noble
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2148074
Title:
"AppArmor update removes /etc/apparmor.d/nautilus profile, breaking
thumbnails in Nautilus (Ubuntu 24.04)"
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2148074/+subscriptions
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