When using driver 545.29.02 (and also the previous beta—I haven’t tested any others in the 545 series), my desktop framerate alternates between 120 and 60 FPS. Video here . This issue does not happen with the 525 or 535 drivers. Here are the details of my configuration: OS: KDE Neon 5.27 User Edit…

Bear in mind the issue also happens on a 60Hz monitor, not just displays with high refresh rates. Essentially, most of the time the desktop is rendered at ~35fps under KDE, with occasional spikes to ~60fps running the 545 drivers. Rolling back to the 535 drivers completely eliminates the problem, w…

I had the same isssue and had to roll back to 535 NVIDIA Driver Version: 545.29.02 Operating System: Arch Linux KDE Plasma Version: 5.27.9 KDE Frameworks Version: 5.111.0 Qt Version: 5.15.11 Kernel Version: 6.6.1-zen1-1-zen Graphics Platform: X11 Processors: AMD Ryzen 7 3800x Memory: 32 GiB…

OS: Arch Linux KDE Plasma version: 5.27.9 KDE Frameworks version: 5.112.0 Qt version: 5.15.11 Kernel version: 6.6.1-arch1-1 (64-bit) Graphics Platform: X11 Processors: 32 × AMD Ryzen Threadripper 2950X 16-Core Processor Memory: 32GB Graphics Processor: NVIDIA GeForce RTX 2080 Having the same issue…

Thanks for noting that this is not KWin/KDE exclusive. Can be important.

Can we expect a fix for this issue with the release of the 545.29.06 drivers?

~/.config/plasma-workspace/env/kwin.sh #!/bin/sh export KWIN_X11_FORCE_SOFTWARE_VSYNC=1 Fixes fluctations (as suggested by valgusk) - but without disabling vsync.

I can’t use this workaround, unfortunately, as I have kwin vsync disabled altogether with “force composition pipeline” enabled in the NVIDIA driver. It’s the only way I can get vsync on my two monitors with differential refresh rates (120 Hz & 75 Hz): export KWIN_X11_NO_SYNC_TO_VBLANK=1 export KWIN…

This is just to keep updated that team is currently debugging the issue.

I’ve been browsing the web for days to finally find a post with this issue. KDE on NVidia always was a bad experience but this made it even worse. It’s so bad that even games are really laggy while MangoHud displays a constant 75 FPS.

545 driver: desktop framerate alternates between 120 and 60 FPS

Graphics / Linux Linux

RPGHiro November 23, 2023, 7:37pm 21

no improvement with 545.29.06 for me.
grafik

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545 driver: desktop framerate alternates between 120 and 60 FPS

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