Bug 444161

Summary: Wayland - Turning monitor off then on again causes the shell to crash
Product: [Plasma] plasmashell Reporter: sirenji404
Component: generic-crashAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: crash CC: nate, sonichedgehog_hyperblast00
Priority: NOR    
Version: 5.23.1   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description sirenji404 2021-10-21 01:11:29 UTC
SUMMARY
When using Plasma Wayland session, turning off the monitor via it's power button, then turning it on again at a later time (regardless of time waited) causes the taskbars/wallpapers to disappear, running plasmashell brings it back.

STEPS TO REPRODUCE
1. Log into Plasma Wayland
2. Turn off the monitor
3. Turn monitor back on

OBSERVED RESULT

Wallpaper and taskbar disappear

EXPECTED RESULT

Desktop to reappear as though monitor was never turned off

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Arch Linux
(available in About System)
KDE Plasma Version: 5.23.1
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION

This is not a new bug, I've observed it as early as 5.21 when I first started using Plasma Wayland full time on my desktop.
Comment 1 Nate Graham 2021-10-21 15:02:06 UTC

*** This bug has been marked as a duplicate of bug 438839 ***