The most cursed thing I ran into while getting the GPU drivers to work on my macbook, was that they didn’t boot in “production” setup - simply got stuck on a black screen.
But once I started debugging, starting the kernel as m1n1 guest, it just worked.
Turned out there was some race condition (?) where it would only boot with increased loglevel. Aaaargh :blobcatangry:
But by chance I figured out that the loglevel mattered and now this is fixed and I can boot the gpu-enabled kernel with my normal config via U-Boot :3