Comment 16 for bug 1567417

I see this on my Lenovo X1 Carbon (4th gen), a skylake machine.

I believe this upstream bug is related:

 https://bugs.freedesktop.org/show_bug.cgi?id=89055

Comment #62 says:

The series that fixes this bug has now been merged to our drm-intel-nightly branch. It should land upstream in kernel 4.8.