Created attachment 175849 [details] T4400_drm_info.txt After upgrading to Plasma 6.2, if I enable Night Light, the mouse movements become laggy, and animations are rendered slowly. This problem was not present at all in Plasma 6.1.
Created attachment 175850 [details] i3-1005g1_drm_info.txt
Operating System: Manjaro Linux KDE Plasma Version: 6.2.3 KDE Frameworks Version: 6.8.0 Qt Version: 6.8.0 Kernel Version: 6.11.7-1-MANJARO (64-bit) Graphics Platform: Wayland
Same here. Operating System: Fedora Linux 41 KDE Plasma Version: 6.2.3 KDE Frameworks Version: 6.8.0 Qt Version: 6.8.0 Kernel Version: 6.11.8-300.fc41.x86_64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 PRO 7840U w/ Radeon 780M Graphics Memory: 58.5 GiB of RAM Graphics Processor: AMD Radeon 780M Manufacturer: LENOVO Product Name: 21K5CTO1WW System Version: ThinkPad P14s Gen 4
*** This bug has been marked as a duplicate of bug 495167 ***
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/6967
Git commit 77c81aef08ba841f30f77745787d06973ecea170 by Xaver Hugl. Committed on 05/01/2025 at 03:14. Pushed by zamundaaa into branch 'master'. backends/drm: fall back to applying night light in non-linear space when linear fails While this isn't correct for gamma 2.2 with non-zero black level, it's close enough for most people, and it's definitely preferable for less capable hardware to have good performance over slightly more correct night light. M +20 -9 src/backends/drm/drm_output.cpp https://invent.kde.org/plasma/kwin/-/commit/77c81aef08ba841f30f77745787d06973ecea170