Comment # 9 on bug 103968 from Michel Dänzer

(In reply to Odo Wolbers from comment #8)
> /usr/local/share/libdrm/amdgpu.ids version: 1.0.0

Looks like /usr/local/lib/libdrm_amdgpu.so* are still left over, which could
bite you again in the future. You can remove all the files you listed in
comment 6.

Other than that, looks like it's working now! Resolving this report as invalid,
as it was an installation issue, not a bug.