https://bugs.kde.org/show_bug.cgi?id=483538
Bug ID: 483538
Summary: VRAM leak when repeatedly switching between window
icons
Classification: Plasma
Product: plasmashell
Version: 6.0.2
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Task Manager and Icons-Only Task Manager
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
SUMMARY
So the VRAM usage leaks when repeatedly switching between window icons in the
taskbar (I tested this with Konsole windows)
I first noticed the issue when my RAM usage was unusually high on KDE 6 (so I
checked radeontop and the GTT usage was over 3 GB which shouldn't happen in
normal usage)
So I did some testing and noticed that issue only happens in that scenario
above (I did some more testing and noticed that disabling the 2 window options
in Icons-only Task Manager prevents the VRAM leak)
Hopefully this bug isn't Mesa-specific though (because I haven't tested a
NVIDIA-only setup)
STEPS TO REPRODUCE
1. Launch KWin Wayland
2. Make sure the 2 window options in Icons-only Task Manager are enabled
3. Open 2 Konsole windows (other apps should be fine too)
4. Hover over the 2 Konsole icons to generate the thumbnails
5. Click repeatedly between the 2 Konsole icons to switch between those Konsole
windows (I think there's an unrelated segfault but the VRAM leak should be
visible before then)
OBSERVED RESULT
The VRAM usage keeps growing with no limit (I managed to hit the 8 GB GTT
limit)
EXPECTED RESULT
The VRAM usage should mostly stay the same
SOFTWARE/OS VERSIONS
Linux: 6.7.9-arch1-1
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Mesa Version: 24.0.2
PipeWire Version: 1.0.3
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