Hello everyone. I’ve read some posts before about Linux behaving poorly when using multiple monitors that have a different refresh rate.
Does anybody here know if X11 + AMDGPU + Mesa + Gnome handles this correctly? I’m thinking of getting a high refresh rate monitor (120hz+) while keeping my secondary at 60hz.
When I was on X11 (kde), my 144hz monitor would frequently feel like it was operating at 60hz but I could never figure out what the cause was. I used to turn off my 60hz monitor before gaming as a workaround. I quickly switched to wayland and haven’t had to deal with it since.
I have a 144Hz between a 60 Hz and a 75 Hz monitor.
It’s not perfect, but does the job decently. In your ~/.profile:
export KWIN_X11_REFRESH_RATE=144000
export KWIN_X11_NO_SYNC_TO_VBLANK=1
export KWIN_X11_FORCE_SOFTWARE_VSYNC=1
If you enable TearFree, it makes the lack of proper vsync less noticeable and fixes the tearing caused by software vsync.
OP’s probably SoL for Gnome though, because Gnome.
