For anyone who facing the issue external display not working as usual via usb-c after upgrade to Monterey, for my case...
M1 max 16" macOS version 12.1
Dell Display U3219Q
I've found WORKaround on Reddit : https://www.reddit.com/r/macsysadmin/comments/qgypzy/comment/hpjdnn9/?utm_source=share&utm_medium=web2x&context=3
Topic:
App & System Services
SubTopic:
Core OS
Tags: