https://bugs.kde.org/show_bug.cgi?id=513277
Bug ID: 513277
Summary: Desktop background image bounces up and down a pixel
on secondary monitor
Classification: Plasma
Product: kwin
Version First 6.5.0
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
My secondary desktop background image, when I move my cursor to it from my
primary screen, and when right-clicking the context menu with my cursor on it,
bounces up and down a pixel, visible at the top of the screen.
STEPS TO REPRODUCE
1. Have a primary monitor with fractional scaling - I use 150% - and of a
higher resolution than your secondary monitor. I use a 3840x2160 monitor.
2. Have a secondary monitor with fractional scaling - I use 150% - and of a
lower resolution than your primary monitor. I use a 1920x1080 monitor.
3. Move your cursor between the two screens. Right-click the desktop on the
secondary monitor.
OBSERVED RESULT
The desktop background image will bounce up and down a pixel on the secondary
monitor. Visible at the top of the screen.
EXPECTED RESULT
The image should remain stable.
SOFTWARE/OS VERSIONS
Operating System: CachyOS Linux
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.18.0-3-cachyos (64-bit)
Graphics Platform: Wayland
GPU1 : AMD RX 9070 XT
GPU2 (headless, connected to a display, but not outputting by kwin): NVIDIA
GeForce GTX 1080 Ti
My screen setup :
Left : 1080p 60hz, 150% scaling, 10 bit colors.
Middle : 2160p 240hz with DSC (display stream compression), 150% scaling, 10
bit colors.
Right : 1080p 60hz, 100% scaling, 10 bit colors.
ADDITIONAL INFORMATION
This does not happen on my third non scaled 1080p monitor.
This appeared in plasma 6.5.0.
This does not happen on the LTS kernel of my distro, which is kernel
6.12.60-2-cachyos-lts.
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