Comment 1 for bug 1569995

hello justin,
I'm on ubuntu 16.04 beta2 (unity DE; hp pavilion x2 detachable z8300 on board, the same your spec) and shutdown buttons are fine out of the box.
Battery not recognized also after recompiling dsdt table.
Other wicked issues: audio (audio controller 808622A8, conexant driver), microsd reader, webcam (sensor ov5693): 4.4-4.5-4.6 kernels tested with no improvements. Also tried modprobe snd_hda_intel and snd_hda_codec_conexant and modprobe uvcvideo with no results in order of audio and internal camera issues.

I hope in hotfixes.