I have an AMD Ryzen 7 9800X3D 4.7GHz processor and AMD Radeon RX 9070 XT setup hooked up to a Samsung S90D as a monitor. Running Fedora KDE Plasma.
I can enable 120hz and HDR from my settings but see no way to set VRR anywhere. It works with the Playstation so I know the tv is capable. I asked AI a couple times just to get a rough idea of things I could try and tried the command
kwriteconfig5 --file kwinrc --group Compositing --key “VRR” “true”
but didn’t recieve a response so idk if this worked or not. Is this going to require installing AMD proprietary drivers? I briefly read a little about that and it looks like the process is quite a bit above my current skill level.
I saw a dev post about disabling Multi Stream Transport on the monitor but I could not find this setting on my tv anywhere so I think this may be a monitor only setting.
Any help or guidance would be greatly appreciated thank you so much in advance!


Yeah, i had the same issue when i decided to buy a LG OLED C5 as my monitor a few months ago. The silly thing is i had already heard about this being a problem before buying it but forgot about it. I ended up swapping my dualboot around and give windows the bigger SSD for all my games, since i really didn’t want to live without high refresh and vrr. I also didn’t want to return the tv because it was a better deal than any monitor at that size, plus it has more features. Pretty much had to give up linux gaming though ;(. I did a lot of research into adapters but all of them are finicky at best and still miss some features like vrr, so it is what it is.