Hi. I have just taken delivery today of the UD-ULTCDL to use with Dell XPS 13-9380, updated Windows 10, a 4k LG 27UD59 monitor and an aged BENQ monitor.
Previously I have run the LG 4K monitor as my single main monitor using a USBC- Displayport connection. Works great.
I installed the driver no problems, and connected the Docking station to the charging USB C port.
Wired Ethernet works fine, charging works, the 2 k BENQ monitor works fine. However the 4k monitor (connected to the 4k HDMI port) flashes constantly. Maybe 1 second on, 2 seconds off, and also some fine lines visible across the screen when on.
I have tried a variety of HDMI cables but these don’t make any difference.
Restarted everything, disconnected everything, but no difference.