Comment # 7 on bug 1207516 from Richard Biener

(In reply to Takashi Iwai from comment #5)
> Try the latest package of kernel-firmware-* for SLE15-SP5 as well as the
> latest kernel package (the best would be from OBS Kernel:SLE15-SP5 repo). 
> The DRM backports came fairly late, and the AMDGPU firmware update was
> included in the last week.

OK, so with SP5 Beta3 _installed_ the X server starts up but it uses the
modesetting driver, it also considers "ati" but that driver doesn't exist.

The machine is up and running at 10.168.4.27.

It seems that Beta3 still misses the kernel-firmware update which I can
see in the source tree already.

I've installed the newly built -amdgpu and -radeon firmware packages,
now I see glamorgl initialized for the RX 6950 XT but still modeset
for the rest (guess that's OK).  The amdgpu driver is loaded.

That means Beta4 will be good here, the installer X crash still remains
to be investigated but as I can't reproduce from an installed system
I'm not sure what I can provide.