I'm also experiencing this on Unity. I have nvidia-prime installed and system hangs only when nvidia driver is used. When I switch to Intel, hdmi port works more or less fine (there are another problem that I believe not related to this).
I'm also experiencing this on Unity. I have nvidia-prime installed and system hangs only when nvidia driver is used. When I switch to Intel, hdmi port works more or less fine (there are another problem that I believe not related to this).