SUMMARY If the SDR Color Intensity is changed the colors on screen don't change until SDR Brightness is also changed. I've tried to determine if this is a problem with kscreen or the kcm, but I can't figure out what the kscreen option is to set it manually, if there even is one... For what it's worth, it worked for me back when I used qt6.7 on some plasma 6.0 beta. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.0.1 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Kernel Version: 6.6.21-1-lts (64-bit) Graphics Platform: Wayland Graphics Processor: AMD Radeon RX 6600 XT ADDITIONAL INFORMATION Output: 2 DP-2 enabled connected priority 1 DisplayPort Modes: 0:3840x2160@60! 1:3840x2160@144* [...] Geometry: 1200,0 3840x2160 Scale: 1 Rotation: 1 Overscan: 0 Vrr: Automatic RgbRange: unknown HDR: enabled SDR brightness: 658 nits SDR gamut wideness: 50% Peak brightness: 1037 nits Max average brightness: 800 nits Min brightness: 0.0517 nits Wide Color Gamut: enabled ICC profile: none
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/5397
Git commit 0360ce38e2aaffb28338a7157e40ca22cb221d4e by Xaver Hugl. Committed on 09/03/2024 at 14:57. Pushed by zamundaaa into branch 'master'. core/colorspace: fix ColorDescription comparisons They used the sdr gamut wideness (which should've been removed) instead of the sdr colorimetry M +0 -11 src/core/colorspace.cpp M +1 -2 src/core/colorspace.h https://invent.kde.org/plasma/kwin/-/commit/0360ce38e2aaffb28338a7157e40ca22cb221d4e
Git commit d549fee89eeb1d0d881de8973bc586bbd7d14c7f by Xaver Hugl. Committed on 09/03/2024 at 19:24. Pushed by zamundaaa into branch 'Plasma/6.0'. core/colorspace: fix ColorDescription comparisons They used the sdr gamut wideness (which should've been removed) instead of the sdr colorimetry (cherry picked from commit 0360ce38e2aaffb28338a7157e40ca22cb221d4e) M +0 -11 src/core/colorspace.cpp M +1 -2 src/core/colorspace.h https://invent.kde.org/plasma/kwin/-/commit/d549fee89eeb1d0d881de8973bc586bbd7d14c7f