Comment # 9 on bug 107518 from Timothy Pearson

(In reply to Timothy Pearson from comment #8)
> Would it make sense to call amdgpu_asic_reset() as part of module load to
> ensure that the GPU is in a known good state?

This didn't fix the problem, but I did note that rmmod / modprobing the amdgpu
module from the host is a valid workaround.  Something must happen on
rmmod-based teardown aside from amdgpu_asic_reset().