I'm experiencing the same issue as well. I get a black screen 2-3 times or more a day. It doesn't seem to be triggered by anything specific. Sometimes it will go black for 1 second or black and then to snow for 1-2 seconds and then back to normal. It happens totally random and I could be playing Diablo III or just doing nothing at all.
I've called apple and they had me unplug everything and reset the PRAM (which didn't fix the issue). They said to call back if I experience it anymore and set up an appointment to take it to the Apple Store for evaluation.
I've tried three difference monitor makes and three different HDMI cables. I have the stock 2.3 Quad i7 Mac Mini (2012) and i'm using HDMI to the monitor. I hope there will be an update to address this soon.
I've called apple and they had me unplug everything and reset the PRAM (which didn't fix the issue). They said to call back if I experience it anymore and set up an appointment to take it to the Apple Store for evaluation.
I've tried three difference monitor makes and three different HDMI cables. I have the stock 2.3 Quad i7 Mac Mini (2012) and i'm using HDMI to the monitor. I hope there will be an update to address this soon.