Yes if you're using Xorg (the default "Ubuntu" session) then mouse cursor movement is done by the Xorg process so it will keep moving even if gnome-shell was frozen.
I meant that you should run 'top' before the problem happens and leave it running so you can watch that window.
When the problem happens is it only keyboard input that freezes or window contents too?
Yes if you're using Xorg (the default "Ubuntu" session) then mouse cursor movement is done by the Xorg process so it will keep moving even if gnome-shell was frozen.
I meant that you should run 'top' before the problem happens and leave it running so you can watch that window.
When the problem happens is it only keyboard input that freezes or window contents too?