I did have the same problem, after OS installation then booting my monitor flickers to black screen.
I have a monitor with 144hz refresh rate. I was able to lower the refresh rate to 120hz and the flickering is gone.
when I tried playing Dota2 it then starts to flicker again, disabling the adaptive sync seem to be the work around.
Im trying to work it on 144hz since it was working well when i was on windows but seems to no avail.
What I did:
- Unplugged the monitor power cable and hdmi
- replaced the hdmi cable
- tried downgrading kernel, found this https://discuss.cachyos.org/t/high-refreshrate-is-causing-black-screen/5884/6?u=lightf
Specs:
Ryzen 7 7800x3d
Red Devil rx 6800 xt
Asrock b650 steel legend
Tforce Xtreem 6000hz 30CL