In the log of comment #6 it looks like you managed a soft reboot rather than the hard reboot I was expecting. That's good news for you but made understanding the log a bit more difficult. It appears the problem you hit was a gnome-shell crash:
Oct 18 12:52:58 fluffy gnome-shell[4425]: The program 'gnome-shell' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRROutput (invalid Output parameter)'. (Details: serial 1470 error_code 145 request_code 139 (RANDR) minor_code 30) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) Oct 18 12:52:58 fluffy kernel: traps: gnome-shell[4425] trap int3 ip:7f0e88877647 sp:7ffe8b7aa5a0 error:0 in libglib-2.0.so.0.6800.1[7f0e88834000+8d000] So once you manage to report your .crash files (using apport-cli), please provide a link to what it created. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1947194 Title: When using Wayland in 21.04, the display often never wakes up after lock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1947194/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs