https://bugs.kde.org/show_bug.cgi?id=468734
Bug ID: 468734
Summary: HiDPI: colored lines at borders, 125% scaling
Classification: Plasma
Product: kwin
Version: 5.27.4
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: amanita+kdeb...@mailbox.org
Target Milestone: ---
SUMMARY
Sometimes the lines appear at the screen edge, the last row of pixels,
sometimes in Firefox next to a playing video, Sometimes in Kate or other apps
there are random vertical shorter lines disappearing again. They are not
permanent and disappear often again.
STEPS TO REPRODUCE
1. Use a HiDPI 14in monitor, scale to 125% in Wayland
2. Have fullscreen applications like firefox Flatpak
3. Play Videos on Invidious, open apps
OBSERVED RESULT
There are some 1px wide vertical or horizontal lines at edges of elements like
windows, boxes or PiP windows, that are colorful, sometimes flickering or
persistent.
EXPECTED RESULT
No weird lines
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 37
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.9
Kernel Version: 6.2.10-200.fc37.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 5 PRO 3500U w/ Radeon Vega Mobile Gfx
Graphics Processor: AMD Radeon Vega 8 Graphics
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