Comment # 1 on bug 105569 from Michel Dänzer

(In reply to CthUlhUzzz from comment #0)
> "radeon.si_support=0 radeon.cik_support=0 amdgpu.si_support=1
> amdgpu.cik_support=1".

FWIW, you only need radeon.si_support=0 amdgpu.si_support=1, since Oland is
from the SI family.


> [  592.579114] amdgpu 0000:01:00.0: Direct firmware load for
> radeon/oland_mc.bin failed with error -2
> [  592.579124] amdgpu 0000:01:00.0: si_mc: Failed to load firmware
> "radeon/oland_mc.bin"
> [  592.579133] amdgpu 0000:01:00.0: Failed to load mc firmware!

The oland_mc.bin microcode is required. Make sure the package
firmware-amd-graphics / firmware-linux-nonfree is installed, and maybe try
re-generating the initrd.