I've installed Ubuntu 16.04 alongside no other OS. After I login, my display will go black and the system will not respond to any input. It will happen at random times, never in the same fashion twice. Sometimes when this happens my monitor will toggle very quickly between display found and not found. When the display does go black the system is not recoverable and must be restarted.
I've reinstalled twice and the same issue occurs.
I have a Intel Core i7-4790K for my CPU and a MSI Radeon R9 390 for my GPU.