https://bugs.kde.org/show_bug.cgi?id=505705
Bug ID: 505705
Summary: "Prefer color accuracy" option makes the display flash
a small white horizontal lines
Classification: Plasma
Product: kwin
Version First 6.3.5
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: colour-management
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
On wayland, when choosing the "Prefer color accuracy" option in the Color
accuracy setting available at the Display Configuration, the display flashes a
small white horizontal line. This only happens consistently after logging in
and for a few seconds. Then, it seems to happen at a random time and once in a
while. May not be related, but increasing the power limit of the GPU seems to
have a positive effect on the number of times that the white line is shown and
the time is takes to go away after logging in.
STEPS TO REPRODUCE
1. Go to the System Settings application;
2. On the Input & Output section, choose the Display & Monitor menu;
3. On the Color accuracy setting, change from "Prefer efficiency" to "Prefer
color accuracy";
4. Press the Apply button;
5. Reboot;
6. Log in and after the Splash Screen, verify if the small white horizontal
lines show on the screen.
ADDITIONAL INFORMATION
For additional context, I have an AMD 7900 series GPU. I do not have HDR
enabled, only adaptive sync (disabling it did not change anything).
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