https://bugs.freedesktop.org/show_bug.cgi?id=58272
--- Comment #10 from Andy Furniss lists@andyfurniss.entadsl.com --- (In reply to comment #8)
Could you please run a git bisection to see where that error has been introduced, then?
It seems that drm/radeon: use async dma for ttm buffer moves on 6xx-SI is the first non working, but it gives a different fail from head. Log attached.