Apple Thunderbolt Display not detected using Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter on new Silicon Mac Mini (M1)
I have a new Mac Mini M1 (Silicon) and an older Apple Thunderbolt display, and I can't get the Mac to recognize the display. I am using the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter.
Behavior
- The Thunderbolt display works fine with my older Intel Mac Mini which has Thunderbolt 2.
- When I use the Apple adapter on my new Mac Mini with Thunderbolt 3, the screen is totally black.
- If I connect a second monitor to the new Mac via HDMI, the HDMI display works, the Thunderbolt does not.
- The USB C ports are working fine with other devices.
- When using the HDMI display and connecting the Thunderbolt display as a second monitor, it does not show up in the display settings or system report; it's totally undetected.
- Compatibility - Apple says the Mac Mini is compatible with the display in this article. The page above for the adapter also lists the "Mac mini (M1, 2020)" as a compatible device.
- Firmware - The Apple store recommended I upgrade the firmware on my Thunderbolt display, but when I got home, I found it was already at the latest version.
- Adapter and Testing- I brought my adapter and new Mac into the Apple store, and everything worked fine with a different Thunderbolt display that had in the store. They also swapped out my adapter for me to try a new one at home, but there was no change in behavior.
Does anybody have any further recommendations or things to try? Has this happened to anyone else? It seems like my specific Thunderbolt display is the culprit, but I can't figure out why it works fine on my old Intel/Thunderbolt 2 Mac Mini, but somehow is non-functional with the new Silicon Mac Mini with Thunderbolt 3. The person at the apple store said that he's heard about this issue but because it's so new, they didn't have any details to share.
Thanks-
Joel
Mac mini, macOS 11.0