Same for me. Downloaded Monterey 12.0.1 on an older (Intel based) MacBook Pro with a Thunderbolt connection to a Lenovo P27h-20 monitor. Used to work perfectly on the previous OS; however, this time it is the laptop screen only...
vanjo22
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
From
Utrecht, Netherlands