Hello everyone 
A word of warning: I am a complete Linux and EOS freshy.
So far my experience was limited to Windows only for private and gaming usage -
and macOS for working purposes.
With building/partially upgrading my private PC I decided to go for a dual boot with Windows and (for now) EOS to see how far I can get and if it possible to get away from Windows entirely.
So I installed EOS this week, installed/made use the most important things for me like the browser as well as Steam for some CS2 sessions.
I have yet to play CS2 as I am experiencing some issues with my usual usage of the display and setting up everything in CS2 as I am used to.
Steam is installed with the amdvlk driver options (not sure if this was a mistake, I think those are the proprietary ones?)
[thorbenw@koerk-endeavour ~]$ lsmod | grep -P 'amd|ati|radeon'
amd_atl 57344 1
amdgpu 15482880 168
kvm_amd 237568 0
amdxcp 12288 1 amdgpu
drm_exec 12288 1 amdgpu
gpu_sched 65536 1 amdgpu
kvm 1388544 1 kvm_amd
drm_buddy 24576 1 amdgpu
i2c_algo_bit 20480 1 amdgpu
drm_suballoc_helper 12288 1 amdgpu
drm_ttm_helper 16384 2 amdgpu
ttm 102400 2 amdgpu,drm_ttm_helper
drm_display_helper 266240 1 amdgpu
gpio_amdpt 16384 0
gpio_generic 24576 1 gpio_amdpt
crc16 12288 3 bluetooth,amdgpu,ext4
ccp 180224 1 kvm_amd
video 81920 3 asus_wmi,amdgpu,asus_nb_wmi
[thorbenw@koerk-endeavour ~]$ pacman -Qs xf86-video-a
local/xf86-video-amdgpu 23.0.0-2 (xorg-drivers)
X.org amdgpu video driver
local/xf86-video-ati 1:22.0.0-2 (xorg-drivers)
X.org ati video driver
Hardware -
AMD 9800X3D
B650E Mainboard
AMD 6900XT
LG 32GS95UX
The issue I’m having is with the Display (and CS2).
The display is usually running on 4K with 240Hz, but has a dual mode which would switch to FullHD and 480 Hz. For more FPS in CS2 I usually switched the mode via a button on the display itself.
On Windows it automatically changes the resolution and increases the Hz.
With EOS… something changes and parts of the screen look FullHDish (Menus, Windows, Text) and some parts at least feel like they’re still displayed in 4K, like the background picture.
The configuration panel still says the resolution is 4K running 240Hz.
In CS2 settings it would run either with 4K or FullHD.
So I would be fine with just setting it to FullHD and let it run like that.
However I can’t set any refresh rate. It just shows a plain “0” and no option to change anything.
With the FPS overlay from Steam it gets pretty clear that the screen is running at 4K.
Meaning the Hz will also be 240 “only”.
Is there any chance somebody has experienced this behaviour as well or knows a possible solution?