Created attachment 124624 [details]
Compiling kernel 4.6.2 https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.6.2.tar.xz
With patch from http://pastebin.com/kZyiZMR5 to enable HDMI audio causes GPU hangs when playing a video.
desktop:~$ uname -m
desktop:~$ uname -r
desktop:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04 LTS
Connected over HDMI
Dmesg and GPU hang log attached
(In reply to Tyler from comment #0)
> With patch from http://pastebin.com/kZyiZMR5 to enable HDMI audio causes GPU
> hangs when playing a video.
We can't support patches that have not been merged upstream. Please reopen if you can reproduce the problem with upstream kernels.
The problem is when I use an upstream kernel I get no audio at all.
I don't know where the "Skylake" part comes from, this is about missing LPE audio support for certain BYT/CHT models. Sure, some i915 bits and pieces are needed for that as well, but the main thing is the audio driver. Can't help you with that, sorry.
Updating the bug details for posterity.