Me too with the display being detected, black, and only seeing the mouse pointer.
MacOS Version 10.13.3
MacBook Pro Retina 13-inch Early 2015
Displaylink Driver Version 4.1.11
Displaylink Device StarTech USB32VGAES
What You Are Experiencing: Detected, working, but only for mouse pointer
What is Expected: Showing windows etc
I use 4 displays. Internal Retina, 1 HDMI, 1 TB, and the displaylink. All worked fine under Sierra (except for some artifacts in Outlook 2016 on the DL display).
I have a colleague with a very similar setup (same HW, same OS build, also startech). His works perfectly. This may help diagnose
I've tried:
- resetting display preferences
- uninstall and reinstall of driver
- manual sniff about and uninstall of remnants (didn't find any)
- separate spaces for each screen
- disabling mirroring etc
Trying next:
- praying
- sacrificing chickens
- sucking it up princess