https://bugzilla.kernel.org/show_bug.cgi?id=105111
--- Comment #6 from Michel Dänzer michel@daenzer.net --- (In reply to fin4478 from comment #5)
amdgpu does not exist in kernel 4.1.6, [...]
The radeon driver (CONFIG_DRM_RADEON) supports your GPU. The CIK support in amdgpu is experimental and not intended for end users.