Additional info... Upon invoking the freeze, Ctl-Alt-F3 sometimes brings up a terminal session on tty3. If it does, Ctl-Alt-F2 will switch back to GNOME which will remain frozen for a while, but will allow switching back and forth with the Ctl-Alt-F# keys.
Running "top" on tty3 shows no processes taking much %CPU. Observed a message "[TTM] Buffer eviction failed" 3 times (on tty3) while waiting for unfreeze. Sometimes, Ctl-Alt-F3 is also unresponsive upon freeze, but did eventually switch to tty3 (after a about 20 seconds). This hasn't been tested much yet. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1885330 Title: System unresponsive to keyboard and mouse clicks when changing screen background To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1885330/+subscriptions -- desktop-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/desktop-bugs