cacook@quantum-sci.com composed on 2016-04-18 19:09 (UTC-0700):

I take it there's no SkyLake support on the Xen side, since that starts
with kernel 4.4?

Which distro and kernel are you using?  Modeset driver built into Xorg doesn't work for you?

"The latest xf86-video-intel driver was causing font rendering problems in emacs, and switching over to the generic driver solved that and a host of other display problems I had. It feels more performant too, which is unexpected considering that I'm using skylake graphics."
https://www.reddit.com/r/archlinux/comments/4cojj9/it_is_probably_time_to_ditch_xf86videointel/