The journalctl contains essentially the same inforamtion as the dmesg excerpt that I had already uploaded.
Though the desktop environment was a good hint. It has plasma and xfce installed, it worked in neither environment. I installed gnome to test it, and it works now. Strangely it also works now in xfce and plasma. I guess that the the firefox package misses one of the dependencies that were installed for gnome. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/2042543 Title: Firefox-snap cannot save files or launch apps due to faulty apparmor configuration Status in firefox package in Ubuntu: Incomplete Bug description: Since a recent update, firefox cannot any more save pages, images or download files. It also cannot launch other processes like zoom via meeting links. This seems to be caused by a faulty apparmor configuration and a common problem since the introduction of the snap package, e.g. c.f. https://arstechnica.com/civis/threads/snap-based- firefox-is-a-terrible-experience.1487499 or https://ubuntuforums.org/showthread.php?t=2476758 . However, none of the proposed workarounds works for me, neither editing apparmor configuration files, reinstalling firefox, or refreshing it via Help -> More troubleshoot information -> Refresh firefox. Finally, I found that snap installs two binaries, one in /usr/bin/firefox and one in /snap/firefox/3252/usr/lib/firefox/firefox. If I start firefox from cli with typing firefox, the first one is invoked, which is broken. If I explicitly invoke /snap/firefox/3252/usr/lib/firefox/firefox, saving works fine. So I just aliased the second binary to firefox in the .bashrc. This binary also strangely seems to use its own configuration, i.e. own apps, password storage, etc. I hope this information helps other users with the same problem and the package maintainers with fixing the configuration. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: firefox 1:1snap1-0ubuntu2 ProcVersionSignature: Ubuntu 5.15.0-88.98-generic 5.15.126 Uname: Linux 5.15.0-88-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Thu Nov 2 10:03:30 2023 InstallationDate: Installed on 2015-11-05 (2918 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) Snap.Changes: no changes found SourcePackage: firefox UpgradeStatus: Upgraded to jammy on 2022-10-30 (367 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/2042543/+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
