[SOLVED] I switched the monitor from HDMI 2.0 to 1.4 aaaaaand now it works. I still don't really understand why. But there it is.
I have two M1 Macs (one Pro, one Air), which I want to connect to my U3821DW. I have installed the drivers available on the site, as well as the firmware updates, and restarted both laptops. For some reason I can't figure out, none of these are working. Neither Mac will connect to the U3821DW through the OWC dock, or through the HDMI dongle. My preference would be to connect my Pro via the OWC because it's the only way I know of for me to access the Ethernet connection. But I don't understand what's happening here. Why won't it connect through either OWC dock or Apple USB-C to HDMI dongle? Why would it be picking up on the HDMI but the display remain black? Someone help please! I need to figure out how to connect both of these Macs simultaneously to the U3821DW, as it's one of a few reasons I chose this monitor.
U3821DW, OWC Thunderbolt Dock, Mac M1 issues