How to set refresh rate?

[Yochanan]

On GNOME you can try this:

X11 doesnt render windows at 144hz while using double monitor setup 144hz/60hz

Try running glxgears (requires mesa-demos) on a separate terminal on each monitor at the same time. I was getting ~ 60 FPS on both until I added the following to /etc/environment: NOTE: This is only for GNOME with NVIDIA: CLUTTER_DEFAULT_FPS=144 __GL_SYNC_DISPLAY_DEVICE=DP-2 No idea what the equivalent might be for KDE with AMD. ❯ glxgears Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. 711 frames…