http://bugzilla.opensuse.org/show_bug.cgi?id=1203312 Bug ID: 1203312 Summary: KDE plasma session crashes when disabling monitor under wayland Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.4 Hardware: x86-64 OS: openSUSE Leap 15.4 Status: NEW Severity: Normal Priority: P5 - None Component: KDE Workspace (Plasma) Assignee: opensuse-kde-bugs@opensuse.org Reporter: post+opensuse-bugzilla@guelker.eu QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0 Build Identifier: Dear all, I have a laptop with a FHD display and an external 4k monitor. When I disable the internal laptop display and then switch workspaces, the KDE Plasma desktop session crashes so that all I see is a black screen. I am using Wayland (to have proper 4k handling). I suppose the problem is not related to the external monitor being 4k, but mine is 4k so I thought I ought to specify this. My laptop is configured to sit to the right of my external monitor, in case this is of any importance. Thanks for consideration. -quintus Reproducible: Always Steps to Reproduce: 1. Start a Wayland session with KDE Plasma. 2. Connect a 4k monitor to a laptop with a FHD screen, 3. In KDE's screen settings, disable the laptop display, 4. Switch workspace, 5. Crash. Actual Results: The KDE Plasma session crashes, i.e. I get a black screen. Expected Results: The KDE Plasma session should not crash. It is possible to "recover" from the problem by switching to a virtual console and executing $ killall plasma_session Then I can log in again, but as soon as I switch the workspace, the crash will happen again. At least however I can use this trick to get to the monitor settings and re-enable the laptop display. System information: Operating System: openSUSE Leap 15.4 KDE Plasma Version: 5.24.4 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 Kernel Version: 5.14.21-150400.24.18-default (64-bit) Graphics Platform: Wayland Processors: 8 �� Intel�� Core��� i5-8350U CPU @ 1.70GHz Memory: 15.4 GiB of RAM Graphics Processor: Mesa Intel�� UHD Graphics 620 -- You are receiving this mail because: You are on the CC list for the bug.