Thunderbolt Display Not Working

Question

Created Jan ’21

Replies 4

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I have a 2020 13 inch MacBook Air and a 27 Inch Thunderbolt Display . I connect using the Apple adapter and everything worked fine until the Big Sur beta 2 update now the display will not turn on. I've tried everything including trying to set up using HDMI. Anyone have the same issue or have a fix?

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Answer 1

jankkm OP

Jan ’21

this seems to be the same Problem I am having.

Have you tried booting the MacBook with the Display connected?

for me this works until I unplug the Display or the MacBook goes to sleep.

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Answer 2

rwt OP

Jan ’21

Thank you for the reply jankkm. I tried that along with several other workarounds including reinstalling BigSur from the app store. When I did the display turned back on. The problem was some of the other apps like Safari would not load and would not open so I had to go back to the beta and now it's not working again.

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Answer 3

jankkm OP

Jan ’21

So you have the problem with 11.2 Beta 2 and installing the latest release from the App Store makes it work again?

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Answer 4

rwt OP

Jan ’21

Yes, downloaded the one from the app store and installed it and it worked except some applications no longer functioned. Had to redownload Beta 11.2.

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