Comment 2 for bug 1643566

Pasting some of my commentary here....

After further discussion with the team, I'm told this is a known issue with Skylake. This should be resolved in v4.9 and backports have been submitted to v4.8:

https://lists.freedesktop.org/archives/intel-gfx/2016-October/109936.html

I have asked sabdfl to proceed with testing the Yakkety HWE kernel to confirm this is indeed resolved for Claire. Note, I specficially requested testing with the linux-hwe-edge 4.8.0-28.30~16.04.1 from our Canonical Kernel Team PPA since it contains the i915 patches referenced above.

sudo add-apt-repository ppa:canonical-kernel-team/ppa
sudo apt-get update
sudo apt-get install linux-generic-hwe-16.04-edge