I am trying to connect my brand new Lambda Dual with Ubuntu to my LG UltraFine 4K Display via USB-C (it is working fine with my MacBookPro). When I start the Lambda machine, the screen remains blank. After a few minutes, however, I can hear the Ubuntu start up sound (but the screen remains blank).
I also tried connecting with a USB-C Adapter to Display Port. However, that does not even give me the sound.
Any suggestions would be greatly appreciated.