I also started experiencing this problem on 16.04, right after I had enabled “turn screen off when inactive” in the system settings. I have two identical Iiyama monitors, one of which is attached to the DVI port of the integrated Intel graphics, the other to the HDMI port.
I also started experiencing this problem on 16.04, right after I had enabled “turn screen off when inactive” in the system settings. I have two identical Iiyama monitors, one of which is attached to the DVI port of the integrated Intel graphics, the other to the HDMI port.