I believe I have the same issue. Dell XPS 13 9360 laptop connected to a Dell U3011 monitor using a CableMatters USB-C to Displayport adapter. When I plug my laptop the GNOME shell is almost completely unresponsive. I can use the active window but I cannot switch windows. The only reproducible way I have found to get out of it, other than to reboot, is to unplug the USB-C adapter, logout of the session, re-plug the USB-C adapter and login again. This behavior was not present with Ubuntu 21.10 and it started after updating to Ubuntu 22.04.
I use an X11 session type: $ echo $XDG_SESSION_TYPE x11 Using journalctl, output attached, there are many logs from the gnome-shell binary, such as this: gnome-shell[###]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed gnome-shell[###]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed ** Attachment added: "journalctl -b0 > journalctl.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1970495/+attachment/5585970/+files/journalctl.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1970495 Title: Window manager freezes when plugging in USB-C dock with external monitor. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1970495/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
