https://bugs.freedesktop.org/show_bug.cgi?id=91704
--- Comment #15 from Andy Furniss adf.lists@gmail.com --- (In reply to Andy Furniss from comment #14)
(In reply to Mathias Tillman from comment #13)
Created attachment 117871 [details] [review] [review] Potential fix
Andy: Could you test the attached patch, please? It's now working fine for me.
It also seems to be working for me :-)
It gets better - there is a chance that this (well it + working current libdrm it enables) has fixed a long standing UVD issue and a more recent vapau_interop one (basically both would randomly fail). It's slightly possible that something else fixed it - will have to play over coming days.