External monitor not working on Wayland

[Ionut Negru]

When I connect the external monitor the image is shown on the external display but it freezes (on both displays); after I unplug the external display the following errors are logged (not sure it is related to the freeze):

Jul 5 09:19:39 xps gnome-shell[10252]: meta_display_get_monitor_in_fullscreen: assertion 'monitor >= 0 && monitor < n_logical_monitors' failed
Jul 5 09:19:39 xps gnome-shell[10252]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed
Jul 5 09:19:39 xps gnome-shell[10252]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed

The external display is connected via a thunderbolt port and an adapter to HDMI.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-shell 42.2-0ubuntu0.2
ProcVersionSignature: Ubuntu 5.15.0-40.43-generic 5.15.35
Uname: Linux 5.15.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue Jul 5 09:21:33 2022
DisplayManager: gdm3
EcryptfsInUse: Yes
InstallationDate: Installed on 2020-08-07 (696 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
RelatedPackageVersions: mutter-common 42.2-0ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to jammy on 2022-04-27 (68 days ago)

[Daniel van Vugt (vanvugt)]

Thanks for the bug report. This sounds like bug 1976204 so please try disabling the Desktop Icons NG extension in the Extensions app (sudo apt install gnome-shell-extension-prefs).

[Ionut Negru (blackjohnny)]

Hi Daniel,

Thank you for your reply

Before checking your solution I tested again to be sure the issue still exists and it seems that the issue has been fixed. Since the bug submission there were a few updates that might have fixed it directly or indirectly:
* a kernel update
* a thunderbolt (docking related) firmware update from Dell

Is there any further action required from me to close this issue?

Regards

[Daniel van Vugt (vanvugt)]

No action required. Closed.