If anyone is wanting Ubuntu 16.04 on an Atom CPU Intel Compute stick with fully working HDMI audio, wifi and bluetooth then I've just posted my ISO http://linuxiumcomau.blogspot.com.au/2016/04/ubuntu-1604-iso-for-intel-atom-compute.html here.
All Atom based Intel Compute sticks are supported including the STCK1A8LFC, STCK1A32WFC, STK1AW32SC and STK1A32SC models.
If Ubuntu is too 'heavy' for the 1GB RAM 8GB eMMC variant (STCK1A8LFC) then it is possible to remove the 'ubuntu-desktop' and 'unity' packages and install 'lubuntu-desktop' or 'lxde' and still get working sound.
Please first read Intel's support and warranty conditions before installing any non-validated operating system: http://www.intel.com/support/motherboards/desktop/sb/CS-035602.htm http://www.intel.com/support/motherboards/desktop/sb/CS-035602.htm
Thanks Linuxium for your effort! Can't wait to test it out.
BTW, have you tested the Linux graphics performance against Windows? Do you know if the ICS is capable for playing fullscreen HD videos in a browser?
Testing the video performance with a 1080p YouTube video as suggested, found that for most part, the video will be ok. But there are several occasions where the video will lag or have a slight pause. Tested it with a Windows ICS and performance is slightly better.
I compared running 1080p YouTube videos under Ubuntu 14.04.3 with 16.01 and found them to be similar. Do you have any examples where a video runs worse under 16.01 compared to 14.04.3 as comparing Ubuntu 16.01 against a different OS might yield different results.