https://bugs.kde.org/show_bug.cgi?id=470789
Bug ID: 470789
Summary: Firefox flickers in Plasma Wayland session
Classification: Plasma
Product: kwin
Version: 5.27.5
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: lassi.vaatamoi...@gmail.com
Target Milestone: ---
SUMMARY
After a recent upgrade, Firefox started flickering in the Wayland session.
Prior to upgrade, the rendering was OK. Also, CPU usage of kwin_wayland is up
from what it was, when Firefox is running (maybe around 18% on idle, at times).
STEPS TO REPRODUCE
1. Upgrade Firefox
2. Reboot and login to Plasma Wayland session
3. Start Firefox
OBSERVED RESULT
Firefox flickering happens when window is moved, or other GUI actions perfromed
EXPECTED RESULT
No extra flicker.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.27
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9
Kernel Version: 5.19.0-43-generic (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i7-7820HQ CPU @ 2.90GHz
Memory: 22,7 GiB of RAM
Graphics Processor: SVGA3D; build: RELEASE; LLVM;
Manufacturer: innotek GmbH
Product Name: VirtualBox
System Version: 1.2
ADDITIONAL INFORMATION
This worked fine:
2023-05-31 20:31:25 upgrade firefox:amd64 114.0+build1-0ubuntu0.22.04.1~mt1
114.0+build2-0ubuntu0.22.04.1~mt1
This started flickering:
2023-06-06 16:26:14 upgrade firefox:amd64 114.0+build2-0ubuntu0.22.04.1~mt1
114.0+build3-0ubuntu0.22.04.1~mt1
No Wayland or Plasma packages upgraded, according to /var/log/dpkg.log.
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