SUMMARY *** Whenever the VRAM is close to being full(example: you are playing a high demanding title which almost always uses 99% of the VRAM 7955MB out of 8192MB) other applications like discord/spotify/web browser(firefox/chromium/chrome) would just completely hang, frozen window until you close and re-open it again. At least on NVIDIA gpu. *** STEPS TO REPRODUCE 1. Play a very demanding title which almost always goes on to fill your VRAM(Ready Or Not comes to mind), where it stays 99% being filled and have discord/web browser or any client in general opened on your second monitor or in the background. OBSERVED RESULT The application has completely frozen. EXPECTED RESULT To work just fine without freezing as on other desktop environments(tested Gnome, Cinnamon and Mate). SOFTWARE/OS VERSIONS Operating System: EndeavourOS KDE Plasma Version: 5.26.90 KDE Frameworks Version: 5.102.0 Qt Version: 5.15.8 Kernel Version: 6.1.7-273-tkg-pds (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 5800X3D 8-Core Processor Memory: 31,3 GiB of RAM Graphics Processor: NVIDIA GeForce RTX 3070/PCIe/SSE2 ADDITIONAL INFORMATION Just wanted to write down that this bug is observed under both X11 and Wayland, with wayland making the entire session unresponsive until you close out the game/app which consumes so much VRAM. In addition this seems to happen only with NVIDIA, as I am unable to reproduce it with AMD card. It has been happening for quite sometime now, which I thought it was an issue that the VRAM can't take it, however after trying other Desktop Environments it seems the problem lies with KDE Plasma(X11/Wayland). NOTE: This issue isn't limited to 5.26.90, I am only reporting it just now, but it has been present in all versions, so it isn't a 5.27 Beta bug.
There was a new NVidia driver release that fixes a kernel panic when vram is full. This is likely related, so please test this again with driver 535.86.05+
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Sorry only just now received the notification - Seems to have been resolved with the latest driver.