I id some tests, and while root was able to create thumbnails in nautilus, I checked the logs and found:
Feb 17 09:20:51 comet kernel: audit: type=1400 audit(1708158051.561:1699): apparmor="DENIED" operation="userns_create" class="namespace" info="User namespace creation restricted" error=-13 profile="unconfined" pid=142479 comm="bwrap" requested="userns_create" denied="userns_create" Feb 17 09:20:51 comet kernel: audit: type=1400 audit(1708158051.565:1700): apparmor="DENIED" operation="userns_create" class="namespace" info="User namespace creation restricted" error=-13 profile="unconfined" pid=142480 comm="bwrap" requested="userns_create" denied="userns_create" Feb 17 09:20:51 comet kernel: audit: type=1400 audit(1708158051.569:1701): apparmor="DENIED" operation="userns_create" class="namespace" info="User namespace creation restricted" error=-13 profile="unconfined" pid=142481 comm="bwrap" requested="userns_create" denied="userns_create" This coincides with me deleting the bogus 1x1 thumbnails an re-entering the folder... ** Bug watch added: github.com/flatpak/flatpak/issues #5462 https://github.com/flatpak/flatpak/issues/5462 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/2054183 Title: nautilus not generating thumbnails anymore Status in nautilus package in Ubuntu: New Bug description: After the upgrade to 24.04, nautilus is not generating thumbnails for new files. Old thumbnails are displayed ok. I cleaned out $HOME/.cache/thumbnails/ and found that only a subdirectory "fail" is being generated. It contains a subdirectory "gnome-thumbnail-factory" which in turn contains lots of PNG files: ece577c54f5ca98e1f7aaa5b4e932aa4.png: PNG image data, 1 x 1, 8-bit/color RGBA, non-interlaced ee638c64b1c285684412717bf120e295.png: PNG image data, 1 x 1, 8-bit/color RGBA, non-interlaced ef811735cfb8e69447b5d3a53f361c63.png: PNG image data, 1 x 1, 8-bit/color RGBA, non-interlaced f0b3ab2f77c342daa3579bfcf9c72481.png: PNG image data, 1 x 1, 8-bit/color RGBA, non-interlaced f0ddb101b8342e4b298b4c7121881422.png: PNG image data, 1 x 1, 8-bit/color RGBA, non-interlaced ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: nautilus 1:45.2.1-4ubuntu1 ProcVersionSignature: Ubuntu 6.6.0-14.14-generic 6.6.3 Uname: Linux 6.6.0-14-generic x86_64 NonfreeKernelModules: zfs ApportVersion: 2.27.0-0ubuntu6 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Sat Feb 17 08:49:55 2024 EcryptfsInUse: Yes InstallationDate: Installed on 2019-04-16 (1767 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) SourcePackage: nautilus UpgradeStatus: Upgraded to noble on 2024-02-14 (3 days ago) usr_lib_nautilus: file-roller 43.1-1 nautilus-extension-gnome-terminal 3.49.92-2ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/2054183/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
