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 Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1970495 Title: Window manager freezes when plugging in USB-C dock with external monitor. Status in gnome-shell package in Ubuntu: Incomplete Status in mutter package in Ubuntu: Incomplete Bug description: 1. Problem DOES appear on Lenovo T470s (Intel). 2. Problem DOES appear on Lenovo T14 Gen2 (AMD). 3. Problem does NOT appear on either of the above *when in the Live Installer*. I specifically checked that my dock behaved well under the Live Installer before deciding to move my workstations to Jammy. Upon logging into a fresh Jammy install, I found the following problem behavior: When the dock is plugged in, the built-in display freezes and the dock-attached displays power up but never render anything (ie, they stay black). Unplugging the USB-C cable gets mouse/keyboard response back on the built-in display. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: gnome-shell 42.0-2ubuntu1 ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30 Uname: Linux 5.15.0-27-generic x86_64 ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Apr 26 18:32:35 2022 DisplayManager: gdm3 InstallationDate: Installed on 2022-04-26 (0 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash RelatedPackageVersions: mutter-common 42.0-3ubuntu2 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1970495/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

