https://bugs.kde.org/show_bug.cgi?id=494407
--- Comment #6 from Evert Vorster <evors...@protonmail.com> --- Hi there, Vlad. I'm running Arch on an Asus laptop with nVidia dGPU and AMD iGPU. My external (secondary) display is 4K@120fps. Up to yesterday (2024-10-09) this was all working perfectly. When updating today, I saw that KDE was updated to 6.2. When rebooting into the new environment, the secondary monitor was showing heavy artifacts, and very poor performance. The artifacts show up with the monitor connected to the HDMI port of the laptop, as well when the monitor is connected to a USB docking station. Recording the screen with OBS studio does not show the artifacts. I usually run the g-14 kernel from Asus, but I checked with the lts kernel, and the same artifacts persist. Nvidia drivers were last updated a few days ago. There is nothing untoward in the logs, both dmesg and journalctl does not show any new errors. The updates were rolled back to 2024-10-08, and the visual artifacts are gone, ruling out hardware issues. I have another laptop with slightly different hardware and a similar setup. In this case, also multiple GPUs, also AMD iGPU and an nVidia dGPU, but both screens are HD, running at 60fps and no scaling applied. It also shows the same issues, but to a lesser extent. Both laptops use the nVidia Optimus tech, better described here: https://rog.asus.com/articles/rog-gaming-laptops/maximize-your-rog-laptops-performance-with-a-mux-switch/ -- You are receiving this mail because: You are watching all bug changes.
