Hello,
I’m using NixOS unstable with Plasma 6. I’m using the Wayland backend with an optimus laptop and the external display is truly lagging and I can’t figure why. It’s just not smooth, but running GLX gears report the correct framerate.
The integrated GPU is provided by the Intel CPU (i7-12650H) and the discrete GPU is a RTX 4070.
The integrated screen is at 144Hz and the external display 100Hz. I have tried a lot of options (the open driver or the default, reverseSync and sync mode, etc…) without any success: the second monitor always seems to be lagging/not smooth. The integrated one, on the other hand, is perfectly fine.
Has anyone had such issue with Plasma ? If so, have you any advices ?
What I already tried:
- Tried the open driver and the default one
- Tried sync and reverseSync
- Tried to shutdown the integrated screen or not
- Tried to put both screens at 60Hz and the external one still seemed to be “laggy”