I treated myself to a new Mac mini, to use at work instead of my MacBook Pro. I have two screens, a standard Samsung 24" monitor connected via HDMI, and a LG UltraFine 4K display, connected via USB C.
Both monitors work fine, but when the computer goes into sleep mode (or screensaver), only the Samsung will wake up. The LG 4K does not “wake up” until I unplug the USB C cable (at either end) and plug it back in again.
I never had this experience on my laptop, when connecting these same two monitors.
Does anyone have any suggestions? The LG firmware is up to date, and there doesn’t seem to be any other variables I can play with!