The issue that I am seeing is exactly the one explained in the bug description.
More precisely, on my slower machine, each time I start firefox (which is now a snap) from a terminal, following error message is displayed : cannot change profile for the next exec call: No such file or directory snap-update-ns failed with code 1 Workaround : After each reboot : $ sudo apparmor_parser -r /var/lib/snapd/apparmor/profiles/* I did NOT find 'snap.firefox.service', but I attach the output of following command : $ systemctl list-dependencies --after snap-firefox-1351.mount ** Attachment added: "systemctl_list-dependencies_--after_snap-firefox-1351.mount.log" https://bugs.launchpad.net/apparmor/+bug/1871148/+attachment/5590992/+files/systemctl_list-dependencies_--after_snap-firefox-1351.mount.log -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apparmor in Ubuntu. https://bugs.launchpad.net/bugs/1871148 Title: services start before apparmor profiles are loaded Status in AppArmor: Invalid Status in snapd: Fix Released Status in apparmor package in Ubuntu: Fix Released Status in snapd package in Ubuntu: Fix Released Status in zsys package in Ubuntu: Invalid Status in apparmor source package in Focal: Fix Released Status in snapd source package in Focal: Fix Released Status in zsys source package in Focal: Invalid Bug description: Per discussion with Zyga in #snapd on Freenode, I have hit a race condition where services are being started by the system before apparmor has been started. I have a complete log of my system showing the effect somewhere within at https://paste.ubuntu.com/p/Jyx6gfFc3q/. Restarting apparmor using `sudo systemctl restart apparmor` is enough to bring installed snaps back to full functionality. Previously, when running any snap I would receive the following in the terminal: --- cannot change profile for the next exec call: No such file or directory snap-update-ns failed with code 1: File exists --- Updated to add for Jamie: $ snap version snap 2.44.2+20.04 snapd 2.44.2+20.04 series 16 ubuntu 20.04 kernel 5.4.0-21-generic To manage notifications about this bug go to: https://bugs.launchpad.net/apparmor/+bug/1871148/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp