https://bugs.kde.org/show_bug.cgi?id=477786
Bug ID: 477786
Summary: Plasma panel flickering when opening application
launcher
Classification: Plasma
Product: kwin
Version: 5.27.9
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-various
Assignee: kwin-bugs-n...@kde.org
Reporter: juuso.maen...@tutanota.com
Target Milestone: ---
SUMMARY
***
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STEPS TO REPRODUCE
1. Start a fresh Plasma session (can be X11 or Wayland)
2. Open the application launcher with the Meta key
3. Close the application launcher using Esc or by clicking outside of the
launcher
4. Open the launcher again using the Meta key
OBSERVED RESULT
When the launcher is opened the second time, the panel flashes in blue as seen
in this video:
https://www.reddit.com/r/kde/comments/17w8rbc/kde_plasma_5279_panel_flickering/
EXPECTED RESULT
The panel doesn't flash; the only thing that happens is the application
launcher opening
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: EndeavourOS
(available in About System)
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.112.0
Qt Version: 5.15.11
ADDITIONAL INFORMATION
This bug also happens on a fresh install. It has also been observed on Fedora
39 and Kubuntu 22.04.
My GPU is Radeon RX 6600 and I use the AMDGPU kernel module. The Fedora user
who mentioned the issue in the Reddit post mentioned above uses the same GPU.
The bug seems to only happen if the application launcher has been closed -
using some other method than pressing the Meta key - an odd number of times.
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