AMD gpu acting up on me

[Schievel]

Hey folks,

I am not really sure if this is in the right subforum, as I am not even sure what I am dealing with here.

Last year I bought a AMD R9 285, before I had a nvidia GPU. I plugged it in and my OpenRC Gentoo bootet up. For several monhs it was working fine. I put VIDEO_CARDS="amdgpu radionsi" into make.conf and did a emerge -avuDN --with-bdeps=y @world
Then the trouble began. I have three monitors connected to the GPU, one on HDMI and two on DVI.
- For some reasons sometimes hyprland only outputs to one screen. It still detects the other monitors and expands the desktop to them like they were there, but the monitors stay off. (and I mean off, not just black. They switch off like the PC went into suspend) Before login into hyprland they work fine in GDM. They also work fine in tty and grub.
After a few reboots they work again.
- I can not log out of hyprland and go back to gdm, as then the screen also suspends. (all three this time)
- I can not log into gnome on wayland, then GDM just freezez, strangely enough I can hit CTRL-C and end up in GDM again
- I can not log into gnome on X. That is, I can but all screens become black. But there is a mouse pointer I can move around and I get a desktop notification.

Regarding hyprland I am completely lost. Regarding gnome I deleted ./local/share/gnome-shell/* and /usr/share/gnome-shell/extensions in case there is a extension that is causing this. But this didn't help.

I don't have an idea where to start really. Maybe gnome as hyprland is that obscure and shaky, that the problem could be on their side.
I also don't know if these problems are interconnected somehow or if they are separate things.

So heres is a syslog when I try starting gnome wayland.