https://bugs.freedesktop.org/show_bug.cgi?id=111551
Christian König christian.koenig@amd.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|NEW |RESOLVED
--- Comment #5 from Christian König christian.koenig@amd.com --- amdgpu is known to not work on arm64 until very recently.
So it is not a supprise that this isn't working. Please switch to a newer kernel and re-test.
Apart from that there isn't much we can do about it.