This message was posted on behalf of Intel Corporation
Thank you for joining the Intel® NUC Community.
In this case I would like to let you know that Intel does not test and validate Intel® NUC on Linux, from our end there is no specific documentation if this configuration will work. We do know that a lot of NUC owners are using it successfully on many different Linux distros, and what we suggest in this case is to check your Linux distro's website and forums at OpenELEC Mediacenter - OpenELEC Forum - Category Index for peer assistance with this issue. They should be able to advise what specific kernel or driver for this operating system you need.
I have a NUC7i5BNH running OpenSUSE, with a 4k TV as a monitor
via HDMI cable straight from NUC to TV (not DisplayPort to HDMI).
It sync'd at 3840x2160 at 30Hz straight out of the box, even in
the BIOS. With some xrandr magic I can run at 2160p at 60Hz.
However, playing 4k video is very choppy (maybe 4 frames per second?)
with the cpu maxxed out. Intel claims even the i3 runs 4k@60 fine on
Windows 10, but the Linux drivers can't take advantage of the graphics
hardware. (yet?) Sigh.
Maybe this data point will be useful.