I can't use 120 Hz refresh rate in Plasma anymore

I have a Dell s2719dgf monitor connected to my GPU (AMD 6750 XT) via DisplayPort. It’s a 2560x1440 144 Hz monitor but I always set it at 120 Hz in Display and Monitor (KDE System Settings) since I feel it’s good balance for gaming and desktop usage.

Since yesterday, after I upgrade to mesa 22.3.3-1 and restarted the system, the 120 Hz is gone and I can only select 144 Hz or 60 Hz. Also, using VRR with 144 Hz causes heavy flickering on screen. Any idea on what’s going on?

I am having the same issue in sway.

Do you have VRR set for AMDGPU?

https://wiki.archlinux.org/title/Variable_refresh_rate#Enable_on_AMDGPU

I turned off adaptive sync and it stopped the flickering, but im still missing a lot of different frequencies from the output of swaymsg -t get_outputs

I’m using Wayland, it should be on by default, I believe.

so if i do understand it right: refresh rate is broken in newer LTS versions of plasma?

1 year ago it worked fine for me after installing some drivers, now i got back to linux and it doesn’t work anymore, i’m stuck at 60 and 120hz should be up to 175hz, at the beginning it was able to go up to 175, but the monitor didn’t display anything?

should i do a new thread? since i don’t know what it could be yet?
GTX 960, 1 display 60hz, 2 display 175hz

Yes. New thread for sure.

1 Like