27" Thunderbolt Display with M1 MacBook Pro

Having the same problem on my MBA m1 + apple Thunderbolt Display, ever since I updated to Monterey 12.3 the screen went blank, speaker, mic, camera and ports work, the screen is detected in settings-display menu but no image just darkness.

Will give this a try, I ordered a thunderbolt 2 cable. If it works I'm posting in my own thread, there seems to be a lot of people experiencing this.

One quick question, when you solved the problem using the thunderbolt cable directly to monitor port, did you keep camera, speakers, mic and ports funtionality or was it all lost in the name of image?

I would suggest ruling out faults in each of the devices separately.

-check thunderbolt display with some intel-based Mac with direct TB-2 port.

-check TB2-TB3 adapter with some other device on your M1 Mac to check both adapter and Mac port.

-and finally, check some other thunderbolt display with your M1 to see if the problem is there or not. If yes, then there must be some software related issue.

Is it that the TB Display worked on Big Sur, and as soon as you upgraded to Monterey, it stopped working?

The Thunderbolt Display worked along with all its subsidiary devices, e.g., camera, speakers, ports, etc. when I attached a cable to its TB Port at back and the TB2-TB3 adapter connected to M1.

Unfortunately the thunderbolt cable arrived and I still have the same problem, blank screen. This has to be software related.