I think this is probably related to #86551, but that issue was fixed in 3.17/3.18 and my issue is still present in 4.8.0, 4.8.6 and 4.8.7.
When I recently installed Ubuntu 16.10 on a new machine (ASRock Z170 Gaming-ITX/AC S1151 M-ITX Intel Motherboard with Intel Core Skylake Processor i5-6500/3.2 GHz Processor CPU), I got a blank screen on first boot. Removing "quiet splash" allows it to boot up until the message:
fb: switching to inteldrmfb from VESA VGA
I can get it to boot with "nomodeset", but then the graphics options are very limited if I start X. Some websites suggest removing the "vga=" bit of my boot line, but I don't have one to remove so I can't do that.
There is a full dmesg output for a non-nomodeset (blank screen) boot here: http://pastebin.com/HA8SNQJa and a full dmesg output for a nomodeset boot here: http://pastebin.com/gL5bvSXp (these were captured with 4.8.6, but I've noticed no difference with 4.8.7).
There is a lot more information about the various things I have tried (and some configuration files) in this askubuntu.com question (and in one or two of my comments in responses to the answers):
I can obviously post more information as required.
As discussed in the newy accepted answer to the askubuntu.com question, this appears to be fixed in the drm-intel nightly build on 2016-10-19 of 4.9.0.
For future reference, please file drm/i915 bugs at https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel