Created attachment 154285 [details] Video showing the flickering when a "popup" apears and disapears When I use KWin composing, sometimes the desktop flickers. When i turn composing off, the problem does not occur. The flickering also does not occur always. Sometimes it does, sometimes not. Also there are some actions/animations that do more frequently gnerate the flickering. The attached video demonstrates the issue. I do have another Laptop where the bug does not occur. I would guess it originates from the 19:10 ratio or the ~4K resolution of the screen (which my other Laptop does not have). SOFTWARE/OS VERSIONS Linux/KDE Plasma: Debian GNU/Linux (Bookworm) KDE Plasma Version: 5.26.3 KDE Frameworks Version: 5.100.0 Qt Version: 5.15.6 Kernel: 6.0.0-5-amd64 Graphics Platform: X11 Graphics Driver: Intel Mesa ADDITIONAL INFORMATION Hardware: Lenovo T14 Gen 3 Display resolution 3840x2400 Intel Core i7-1270P (Iris Xe Graphics)
After several attempts to solve the issue, I discovered, that using Plasma Wayland solves the issue entirely. Also it seems to scale so much better than X11 Plasma on 4K Displays. To install Plasma Wayland I yust installed plasma-workspace-wayland: apt install plasma-workspace-wayland
Closing as the user reported the problem fixed