SUMMARY HDR check box is not visible for my monitor. During the development of Plasma 6 I tried it few times using live USB dongles and the HDR checkbox was visible in the display configuration. Now decided to upgrade my system to Fedora 40 and the HDR checkbox is not visible. If I use the CLI `kscreen-doctor output.DP-1.hdr.enable` it works and I can enable and disable the HDR. STEPS TO REPRODUCE 1. Open display configuration 2. Click on HDR enabled monitor 3. HDR checkbox should be visible OBSERVED RESULT HDR check box is not visible EXPECTED RESULT HDR check box should be visible for the HDR enabled monitors. SOFTWARE/OS VERSIONS Linux: Fedora 40 KDE Plasma Version: 6.0.0 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Display: Wayland Graphics: Intel Monitor: Benq PD3205UA
Unfortunately HDR is intentionally disabled on Intel right now due to driver bugs. Maybe we should make this clean in the UI so people don't get confused and submit bug reports... what do you think, Xaver?
I don't know any (good) way to detect this in KScreen, wide color gamut is disabled in KWin (because that's what's broken for external displays) and there's no outward communication about it - it was only meant be a quick hack until Intel fixes their driver. If it's still broken when 6.1 comes around, we could maybe show the option with a warning about it potentially not showing correct colors instead. We could also (in 6.0.2) show the HDR checkbox even when wide color gamut isn't available, and only toggle HDR when that's the case. I chose to hide the option in that case because of broken displays that only enable "HDR mode" when both HDR and WCG are active though, so it could introduce other issues... but it should at least affect fewer people.