https://bugs.freedesktop.org/show_bug.cgi?id=93862
--- Comment #5 from Michel Dänzer michel@daenzer.net --- The kernel change is correct, it merely exposed bugs in Mesa (https://patchwork.freedesktop.org/patch/71628/) and xf86-video-amdgpu (http://lists.x.org/archives/xorg-driver-ati/2016-January/028475.html).