Thanks for the bug report. It appears gnome-shell has frozen or crashed but Xorg is still working.
Next time the problem happens, please: 1. Wait 10 seconds. 2. Reboot. 3. Open a Terminal and run: journalctl -b-1 > prevboot.txt 4. Attach the file 'prevboot.txt' here. Please also follow these steps to check for crashes: https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment ** Tags added: 5.8-gfx ** Package changed: xorg (Ubuntu) => gnome-shell (Ubuntu) ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1915026 Title: Souris inactive et écran figé To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1915026/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs