https://bugs.kde.org/show_bug.cgi?id=509906
Bug ID: 509906
Summary: Secondary monitor sometimes shows black, unclickable
desktop after login or wake from sleep
Classification: Plasma
Product: plasmashell
Version First 5.27.5
Reported In:
Platform: Debian stable
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: Desktop icons & Folder View widget
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 185235
--> https://bugs.kde.org/attachment.cgi?id=185235&action=edit
Output of journal and related directories
SUMMARY
On Debian Stable with KDE Plasma, one of the screens (randomly HDMI-0 or DP-1)
sometimes shows a black background and does not accept mouse interaction on the
desktop (cannot click anything. Icons, context menu, nothing appears but a
black background). Panels and application windows continue to work normally on
that monitor.
If I open System Settings → Display and deactivate the affected monitor, Apply,
then Undo (reactivate it), the desktop background, icons, context menu and
everything appears, gets clickable and get back to normal.
STEPS TO REPRODUCE
1. Start KDE Plasma with two monitors (HDMI-0 and DP-1).
2. Occasionally, one monitor shows only black where the desktop should be, and
it is not interactive. There's no icons, no context menu window.
3. Panel and windows still render fine.
OBSERVED RESULT
* Affected screen is black.
* Desktop containment is missing, cannot click or interact.
* Journald shows errors like:
```bash
org.kde.plasma.containmentlayoutmanager: Error: cannot change the containment
to AppletsLayout
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:XX:
TypeError: Cannot read property 'configuration' of null
```
EXPECTED RESULT
Both screens should consistently show the desktop and allow interaction without
manual deactivation/reactivation.
SOFTWARE/OS VERSIONSLinux/KDE Plasma:
Operating System: Debian GNU/Linux 12
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.0-37-amd64 (64-bit)
Graphics Platform: offscreen
Processors: 6 × Intel® Core™ i5-9400F CPU @ 2.90GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GT 1030/PCIe/SSE2
ADDITIONAL INFORMATION
Session Type: X11
Output of `journalctl --user -xe | grep plasmashell)` and related directories
are on "output-screen-crash.txt" attachment.
Workaround: Disable and re-enable the monitor in Display Settings
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