Displaylink USB to DVI Blank Screen

[tcs75]

bump... kicking up dust on this thread.

I'm having the exact same issue here with a Windows 7 Dell Latitude E5440 on a Targus ACP70EUZ port replicator/docking station.

Connected is a Dell Monitor that works fine on other computers (w/o dock).

I have two identical docking stations and on both the external display remains blank/black. Not impossible but very unlikely that this is a hardware issue on the docking stations.

The monitor LED is green (instead of yellow, which would mean no signal).

The external display is identified and its resolution adjustable in Windows 7 and I can move mouse and windows across the screens. However nothing would show on the external monitor.