I just installed the latest (15.2) MacOS update. Unfortunately, my external screen ( DELL U4919DW conected via USB C) is now not recognized anymore.

Neither is the built-in USB hub, which left me wondering whether it's just this "Allow accessory to connect" window that should be popping up, but somehow isn't...I set the relevant setting for this to a very forgiving value for testing purposes, but no change.

As hinted in a reddit forum, I tried deleting /Library/Preferences/com.apple.windowserver.displays.plist and rebooting, no impact though.

Any ideas what could be done to reactivate my setup?