https://bugs.kde.org/show_bug.cgi?id=497023
Bug ID: 497023
Summary: Resolutions above 4k (3840x2160) has screen
artefacts/static noise on screen
Classification: Plasma
Product: kwin
Version: 6.1.1
Platform: Fedora RPMs
OS: Other
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 176336
--> https://bugs.kde.org/attachment.cgi?id=176336&action=edit
Screen Artefacts 5k
SUMMARY
When I boot linux at the native resolution 5120x2880 with KDE Plasma as my
Desktop environment the screen is has screen noise(snow)/artefacts
This only happens on those with KDE as their desktop environment because I
tried:
- Nobara
- CachyOs
- Fedora KDE
I am connecting the DP out -> DP In (Thunderbolt AIC) -> Thunderbolt Out ->
Apple Studio Monitor.
However if I reduce the resolution to 3840x2160 the screen noise/artefacts
disappear. This setup has no such artefacts on Windows 11 at the native
resolution. Is this a known bug or is there a setting/config that I can use.
Hardware:
https://www.asrock.com/mb/AMD/B650M%20Pro%20RS/index.asp
https://asrock.com/mb/spec/product.asp?Model=Thunderbolt%204%20AIC%20R2.0
GPU is AMD 7900GRE
Apple Studio Display
STEPS TO REPRODUCE
1. Install any distribution with KDE Plasma >= 6.1.1
2. DP-OUT -> DP IN -> THUNDERBOLT OUT -> Thunderbolt Monitor (5k resolution)
3.
OBSERVED RESULT
Screen artefacts
EXPECTED RESULT
No artefacts as experienced on Windows 11
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Nobara (CachyOS/Fedora)
KDE Plasma Version: 6.1.1
KDE Frameworks Version: ?
Qt Version: ?
ADDITIONAL INFORMATION
I have attached a video of what the artefacts look like.
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