SUMMARY The colors are stuck at desaturated when hdr is enabled since I upgraded to 6.4. The color intensity slider in settings, 'rgb range' dropdown, the color profile dropdown (if hdr is disabled or not available) do not change the colors on the screen. Happens on both nvidia and amd graphics. The color intensity slider and color profiles used to work on 6.3 STEPS TO REPRODUCE 1. Open settings and try changing color intensity or color profile OBSERVED RESULT No change. EXPECTED RESULT Colors change based on color profile and color intensity settings SOFTWARE/OS VERSIONS KDE Plasma Version: 6.4.0 KDE Frameworks Version: 6.15.0 Qt Version: 6.9.1 Kernel Version: 6.15.3-arch1-1 (64-bit) ADDITIONAL INFORMATION Hdr content works as expected
Update on this, tried this on a samsung monitor and the settings do work there. The monitor where it doesn't work (but used to work) is a cooler master gp27q. Unfixed in 6.4.1
Please attach the output of > drm_info > kscreen-doctor -o and > cat /sys/class/drm/card1-HDMI-A-1/edid > edid.bin (connector name may need adjusting) while the monitor is connected
https://files.catbox.moe/8rwwbe.txt https://files.catbox.moe/kjondr.txt https://files.catbox.moe/cq0zdd.bin I'm not sure how to upload files here directly
Alright, it looks like KWin can't parse the display primaries: > │ │ │ │ ├───Red: (0.6400, 0.3300) > │ │ │ │ ├───Green: (0.3000, 0.6000) > │ │ │ │ └───Blue: (0.1500, 0.0600) that's exactly sRGB, which is the fallback for when no color info is present. I put your EDID into an autotest, and it also gets sRGB as the result. It seems that it's just what we get from libdisplay-info
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/7857
Git commit fb085d39eacb78b2bfc61bcc9e2976091f692c75 by Xaver Hugl. Committed on 02/07/2025 at 16:49. Pushed by zamundaaa into branch 'master'. utils/edid: also read edid colorimetry The libdisplay-info default colorimetry may be sRGB if the EDID indicates that the display is in sRGB mode by default. The EDID one might still be sRGB in that case too, but it seems like they differ in practice. M +2 -2 src/backends/drm/drm_output.cpp M +1 -1 src/backends/drm/drm_pipeline.cpp M +30 -5 src/utils/edid.cpp M +4 -2 src/utils/edid.h https://invent.kde.org/plasma/kwin/-/commit/fb085d39eacb78b2bfc61bcc9e2976091f692c75
Git commit cd4f1ebd3d316de965bdb303121639b3a90a4fdb by Xaver Hugl, on behalf of Xaver Hugl. Committed on 02/07/2025 at 23:44. Pushed by zamundaaa into branch 'Plasma/6.4'. utils/edid: also read edid colorimetry The libdisplay-info default colorimetry may be sRGB if the EDID indicates that the display is in sRGB mode by default. The EDID one might still be sRGB in that case too, but it seems like they differ in practice. (cherry picked from commit fb085d39eacb78b2bfc61bcc9e2976091f692c75) Co-authored-by: Xaver Hugl <xaver.hugl@kde.org> M +2 -2 src/backends/drm/drm_output.cpp M +1 -1 src/backends/drm/drm_pipeline.cpp M +30 -5 src/utils/edid.cpp M +4 -2 src/utils/edid.h https://invent.kde.org/plasma/kwin/-/commit/cd4f1ebd3d316de965bdb303121639b3a90a4fdb