I purchased NUC DN2820FYKH a week ago, good initial impression, I fight for six days to solve the problem of overscan ! wrong with Windows 8.1, - ubuntu 14, no solution. Now it is a beautiful ornament.
I hope you can help me, thanks.
I am not from Intel and I don't use Ubuntu, and someone else mentioned that Intel's graphics driver for that specific NUC does not contain their "Customize Aspect Ratio" where you can scale down for overscan. However, the English user's manual for your TV around page 34 mentions "NATIVE" and "PC NORMAL" which come from pressing some button on the remote, and should get rid of overscan.