I’m just annoyed with my multiple monitors on X11 one of them supports 144hz but since the others are 60hz x11 forces 60hz on all monitors.
I have a 170hz for my main monitor and 60hz for my 2nd and it works, Just had to make sure my 170hz monitor was set to be my primary in the KDE display settings.
I think visually it might say the selected hz in my case 144. But I can tell that in practice it is not at 144. If I disable the other monitors only then does it actually go to 144. I’m not sure if I have a config issue, but I thought this was expected behavior from X11.
Think I also had to disable vsync globally. It was a while ago I had to set all that up so I’ve forgotten how to exactly.
X11 does support multiple refresh rates. It’s just that usually the compositor or window manager vsyncs every display, thus making everything refresh at the lowest refresh rate. Are you using KDE? If yes, place these variables in /etc/environment and reboot:
KWIN_X11_REFRESH_RATE=144000
KWIN_X11_NO_SYNC_TO_VBLANK=1
