Re: It is the video hardware driver's fault
@Dave K Every time the monitor is disconnected, the session crashed and all running programs closed
The graphics core on most NUC products is mobile, rather than desktop, in origin - i.e. it's a CPU+GFX intended for laptop designs. As such, it assumes that it will ALWAYS have a monitor attached (laptop panel via eDP, or whatever) and hence, in its NUC incarnation, behaves oddly when there isn't one. Yeah, sucks.