My Thunderbolt display monitor no longer connects to my MacBook Air. It worked on Friday but didn't work on Monday, which looks like it was after the recent Ventura 13.5.1 update. I have another MacBook still running on Monterey 12.6.5 and the monitor connects just fine, so I know it is not the monitor. Any suggestions?
MacBook Air 13″
Are you using a cable with the lightning bolt on the connector?
Does the computer have more than one thunderbolt connector, and have you tried all the connectors?
Is anything else plugged into the computer besides power?
I am using a T2 to T3 adapter. I’ve tried both ports. Nothing else is plugged in. The monitor with the same adapter connects just fine to another MacBook that has not been updated the the latest MacOS (Ventura 15.3.1). That’s why I suspect that it’s the latest update that’s causing the issue, but looking for anyone else that may have the same issue.
Check the detect displays option in Apple menu -> System Settings -> Displays to see if anything is detected.
If there isn't, then I agree something didn't install right. You can try command-R boot recovery to see if something was missed.
thunderbolt display not working after Ventura 13.5.1 update
