Catalina and Del 3100
 

Installed beta software and followed install procedures (including Privacy/screen recording switch) and Dell 3100 not activated. Catalina software seems to recognize that a display (Viewsonic via Dell 3100) is connected, but display does no light up.

Hi.

Can you please follow that instructions? Does any of them helps you?
https://support.displaylink.com/know...lay-is-working
https://support.displaylink.com/know...-functionality


If you still have issues please gather diagnostic information and attach them in the post.
Please use our support tool:
https://www.displaylink.com/downloads/file?d=66

I would be grateful for output of terminal command:
sudo kextstat | grep DisplayLink

Installed driver 5.1.1 and that works fine. That's all the troubleshooting I am able to do while I am at work.

Dell 3100 and Catalina
 

Thanks for your response. The first link (boot into Recovery mode and run the kextcache) seems to have done the trick. I think this needs to be smoother for the average user, though.

Please upgrade your macOS to very recent Catalina 10.15.1

Together with DisplayLink driver 5.2.1 beta 3 all major issues should gone.