u/Dry_Composer_2668

Hi,I am currently using niri + dms and Plasma on CachyOS, but I am running into some weird refresh rate issues with my monitors.

in the terminal /settings it says i am on 180 or 300 but it was feeling laggy so i tested it on UFO frame rate tester on firefox.

On niri I am only getting 60 FPS on both my main monitor and my 2nd monitor.

On kde I am getting 300 Hz on the built-in monitor, but still stuck at 60 on the 2nd monitor.

I checked the wiki for niri and tried to set it up for a dual GPU system by setting render-drm-device "/dev/dri/renderD128".

When I set it to NVIDIA, the 2nd monitor works, but the built-in monitor shuts off completely.

When I use Intel on both, I get 60Hz on both, OR I can get 300Hz on the built-in only if I completely disconnect the 2nd monitor.

i could not find the same issue and When I asked an claude about it, it said it's a driver limitation.

Is there something I can do about this, or am I missing someting?

My Specs:

  • OS: CachyOS x86_64
  • Host: ROG Zephyrus M15 GU502LU
  • Kernel: Linux 7.0.3-1-cachyos
  • WM/DE: niri 26.04 (Wayland) / KDE Plasma
  • Display 1 (Built-in): 15" 1920x1080 @ 300 Hz
  • Display 2 (External): 27" Odyssey G5 2560x1440 @ 180 Hz
  • CPU: Intel Core i7-10750H
  • GPU 1 (Discrete): NVIDIA GeForce GTX 1660 Ti Mobile
  • GPU 2 (Integrated): Intel UHD Graphics
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u/Dry_Composer_2668 — 11 days ago