It is very similar to Bug 442520 (not sure if it is a duplicate). SUMMARY I am using a laptop with an external monitor. Its RGB range should be "full" but is incorrectly detected by the automatic algorithm of the Intel driver. I can set the correct RGB range in the Display settings (Wayland). But every time I plug back the monitor, the RGB range resets to "automatic". STEPS TO REPRODUCE 1. plug an external hdmi monitor 2. set its RGB range to "full" in the Display settings 3. unplug the monitor 4. plug in the monitor OBSERVED RESULT The RGB range "full" is not applied (low contrast image in my case), and the option is set to "automatic" if I open the Display settings. EXPECTED RESULT The RGB range "full" should be applied. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Neon unstable (neon-unstable-20220206-2353.iso) KDE Plasma Version: 5.24.80 KDE Frameworks Version: 5.91.0 Qt Version: 5.15.3
Possibly duplicate of bug 442520
*** This bug has been marked as a duplicate of bug 442520 ***