Getting "no signal" after verbose but before login screen

So originally I've been running Big Sur and Monterey on iGPU, I'd go through verbose, then apple logo with loading bar, then login screen. After adding 6600XT my displays would get "no signal" after verbose, than return right to login screen.

Now, I did a clean install of Sonoma using OC 0.9.8, and while this time I didn't need to do any framebuffer shenanigans (all ports work out of the box, and no pink screen either) I still lose display signal for a few moments before getting to login...

Read more