Running Arch, Had the same problem but is since today solved.

Today there was updates from mesa (17.3.0-2 -> 17.3.1-2) and xorg-server
(1.19.5-1 -> 1.19.6-2) wich solved this problem, working fine again.

https://bbs.archlinux.org/viewtopic.php?id=232925

I had problems for weeks, now working fine, resolved for me.