KDE Plasma unstable on specific AMD GPUs

[lilac locust]

I run two different GPUs in my pc, a 6650XT, and a 5500 XT. On KDE Plasma, I cannot use the wayland session as it causes weird display flickers in any fullscreen application on the 6650XT, and straight up crashes amdgpu on the 5500XT. I cannot use the 5500XT at all as a primary since both wayland and X11 crash afer a few seconds due to amdgpu experiencing timeouts. I know for sure the actual hardware isnt damaged because this only occurs on KDE Plasma, not on other operating systems such as windows. The main thing im looking for is how I can properly debug/test this issue, and if I can figure out some way to solve the instability, as I've been stuck on X11 due to wayland's incompatibilities with my hardware.

[quartz torrent]

https://wiki.archlinux.org/title/AMDGPU

did you install the drivers

[lilac locust]

yes, and i made sure they are up to date

linux, linux firmware, amdgpu, and kde plasma are all up to date

[quartz torrent]

do you have the correct module order

Specify the correct module order

Make sure amdgpu has been set as first module in the Mkinitcpio#MODULES array, e.g. MODULES=(amdgpu radeon).
^^^

[quartz torrent]

sudo pacman -S linux-firmware-amdgpu

im just asking you stuff from https://wiki.archlinux.org/title/AMDGPU

if you read the entire thing and it doesnt solve your problem, then idk

[lilac locust]

i already have this and its up to date

[quartz torrent]

did you read the entire wiki page

every little part of it

since the wiki usually has it all

my problems got fixed on the wiki with nvidia

[lilac locust]

ill try combing through it

[quartz torrent]

thats what fixed my nvidia problems

[lilac locust]

but the dumbest part is i get no error messages with the display flickering

it just flickers for no reason and only when on wayland

(maybe because wayland is dookie cheeks but nobody's ready for that)

[quartz torrent]

I use wayland with 0 issues

I also changed my kernel 3 times and still no issues

I just installed the right drivers :p

[lilac locust]

also i cant seem to find anything about weird black screen flicking on the amdgpu page, ill try looking into wayland stuff itself

[lilac locust]

idk ive always seemed to have issues with wayland no matter what i use

using different installs/drives

its a persistient issue

and no, the hardware isnt damaged

like i still have zero clue why wayland just gives amdgpu a stroke specifically on the 5500XT, i tried it on two different 5500XT's and the issue persists

i boil down every other variable and it lies to using the 5500XT, which makes zero sense

[lilac locust]

i messed with my display opotions and setting adaptive sync to never fixed the display flickering on the 6650XT