Unfortunately, I must disagree with Tim in #55: This problem affects me on a standard desktop, with absolutely no remote access involved. I'm running 22.04, which I updated from 21.10 with KDE Plasma, and firefox intermittently(!) will not start, spouting the "not a snap cgroup" error message (logged to ~/.xsession-errors).
To be more precise: Launching firefox from the .desktop launcher in Plasma will _sometimes_ (but not always!) fail with the abovementioned snap/cgroup error.
However, launching firefox from the console with the "firefox" command will _always_ work correctly, as well as executing a keyboard shortcut that runs the "firefox" command.
Unfortunately, I must disagree with Tim in #55: This problem affects me on a standard desktop, with absolutely no remote access involved. I'm running 22.04, which I updated from 21.10 with KDE Plasma, and firefox intermittently(!) will not start, spouting the "not a snap cgroup" error message (logged to ~/.xsession- errors) .
To be more precise: Launching firefox from the .desktop launcher in Plasma will _sometimes_ (but not always!) fail with the abovementioned snap/cgroup error.
However, launching firefox from the console with the "firefox" command will _always_ work correctly, as well as executing a keyboard shortcut that runs the "firefox" command.