If this happens again try running `SNAPD_DEBUG=1 snap run telegram- desktop` and collect the log. Since 22.04 is using unified hierarchy, we try to ask your session's systemd to create a transient scope for it. In your case, the log indicates that this operation failed. Looking at the log:
Feb 23 15:17:04 d960-ubu2 featherpad[66733]: Failed to load module "appmenu-gtk-module" Feb 23 15:17:19 d960-ubu2 systemd[12489]: snap.chromium.chromium.31faf3af-f659-4425-9943-1a3d21db6861.scope: Couldn't move process 66754 to requested cgroup '/user.slice/user-1000.slice/user@1000.service/app.slice/snap.chromium.chromium.31faf3af-f659-4425-9943-1a3d21db6861.scope' (directly or via the system bus): Input/output error Feb 23 15:17:19 d960-ubu2 systemd[12489]: snap.chromium.chromium.31faf3af-f659-4425-9943-1a3d21db6861.scope: Failed to add PIDs to scope's control group: Permission denied Feb 23 15:17:19 d960-ubu2 systemd[12489]: snap.chromium.chromium.31faf3af-f659-4425-9943-1a3d21db6861.scope: Failed with result 'resources'. Feb 23 15:17:19 d960-ubu2 systemd[12489]: Failed to start snap.chromium.chromium.31faf3af-f659-4425-9943-1a3d21db6861.scope. Feb 23 15:17:19 d960-ubu2 chromium_chromium.desktop[66754]: internal error, please report: running "chromium" failed: transient scope could not be started, job /org/freedesktop/systemd1/job/724 finished with result failed Feb 23 15:17:32 d960-ubu2 systemd[1]: systemd-timedated.service: Deactivated successfully. Feb 23 15:17:45 d960-ubu2 rtkit-daemon[56123]: Supervising 3 threads of 2 processes of 1 users. Specifically this one is worrying: systemd[12489]: snap.chromium.chromium.31faf3af-f659-4425-9943-1a3d21db6861.scope: Couldn't move process 66754 to requested cgroup '/user.slice/user-1000.slice/user@1000.service/app.slice/snap.chromium.chromium.31faf3af-f659-4425-9943-1a3d21db6861.scope' (directly or via the system bus): Input/output error I'm afraid there's nothing snapd can do about that. I'm adding systemd to the bug. ** Also affects: systemd (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1961898 Title: chromium-browser is refusing to start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1961898/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs