https://bugs.kde.org/show_bug.cgi?id=513100
Bug ID: 513100
Summary: Wayland: black task manager thumbnails preview +
frequent Plasma crashes (RTX 4060 Laptop, Plasma
6.5.3)
Classification: Plasma
Product: plasmashell
Version First master
Reported In:
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Task Manager and Icons-Only Task Manager widgets
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 187440
--> https://bugs.kde.org/attachment.cgi?id=187440&action=edit
Visual demonstration of the issue.
SUMMARY
After the very latest KDE neon updates I did (December 2025), I had lot of
troubles with KDE under Wayland, and one of the issue I'm reporting today:
window thumbnails preview in the task manager are completely black on Wayland
and the whole Plasma session crashes very frequently. X11 session is now
completely unusable due to massive graphical artifacts and corruption so I
can't check if it works here.
STEPS TO REPRODUCE
1. Be me on my computer
2. Update KDE neon to the latest packages available in December 2025
3. Log in to a Plasma (Wayland) session
4. Open a few applications
5. Hover over any task manager entry
OBSERVED RESULT
- Thumbnails/previews are solid black (no window content visible at all)
- Plasma/KWin crashes several times per hour, often with full session freeze or
automatic restart of plasmashell/KWin, even when doing unrelated things
- Switching to Plasma (X11) session: severe graphical glitches, heavy
artifacts, flickering, missing or corrupted UI elements everywhere – session
became practically unusable after this same update
EXPECTED RESULT
- Correct live thumbnails showing the actual window content
- Stable Wayland and X11 sessions without crashes or graphical corruption
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: KDE neon User Edition (fully updated as of 8 December 2025)
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.14.0-36-generic (64-bit)
Graphics Platform: Wayland (black thumbnails + frequent crashes) / X11 (massive
artifacts)
Processors: 20 × 13th Gen Intel® Core™ i7-13700H
Memory: 32 Gio of RAM (31.0 Gio usable)
Graphics Processor 1: NVIDIA GeForce RTX 4060 Laptop GPU (driver 570.195.03)
Graphics Processor 2: Intel® Iris® Xe Graphics
ADDITIONAL INFORMATION
All problems started immediately after the last KDE neon update cycle I did.
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