MacBook 2016 randomly turns black every couple of minutes with external Display attached It seems like a reset and is happening a dozen times per hour. It happen via HDMI on my Dell U3415W and on a low resolution projector (1024x768px), i used the original Apple adapter but also the Minix.  

Sometimes when it returns i have heavy artifacts on the display and have to unplug/plug the hdmi again for normal operation.
This issue was fixed with macOS Sierra 10.12.2 (16C679)