https://bugs.freedesktop.org/show_bug.cgi?id=99851

--- Comment #27 from Alex Deucher alexdeucher@gmail.com --- (In reply to intermediadc@hotmail.com from comment #26)

Need to notice the issue now is present on 8x slot too on kernel 4.11 rc3

Can you bisect? That might give us a clue as to the overall root cause (whether it's a driver or platform issue).