(In reply to Alex Deucher from comment #19) > were you using the patch and module option from comment 14? I was using the drm-next-4.17-wip branch and pulled from commit c2637e788da7a1cd535185e253ecc267b0410aff (current HEAD). I am fairly certain that this does contain the patch you mentioned, amongst other things. Kernel command line options used were amdgpu.dc=1 and amdgpu.force_atpx=1.