Hi, I'm having issues configuring a dual screen setup, atm I have the main screen connected to DP-1 on discrete card RX 6700, this is all good shows the desktop fine. I also enabled the IGP of an AMD 5700D and conected a second monitor to that (DP-4) and I get a black screen with mouse cursor on that monitor.
DP-1 works and shows kde desktop fine, but this DP-4 only shows a black screen that does show the mouse cursor.

IDK how I managed to fuck it up but this config was working before, but I switched to having both connected to the discrete GPU for some time and then when I reverted to one monitor to each GPU this issue happens.

The reason to not have both monitors connected to the discrete GPU is because I get constant flickering on the 2nd monitor and sometimes CTD when gaming if I switch to the 2nd desktop which is annoying.

I tried:
- booting on LTS kernel, issue persists
- deleting ~/.config/kwinoutputconfig.json from a different TTY while not logged in (I do use plasma-login-manager though so that does get started), issue persists
- installed Cosmic desktop and it works fine, shows desktop on both screens

Can anyone point me on what to try next or what to look for?