Prior to updating to macOS 12.2.1, when I closed my laptop lid, the external display would stay on and I could use my laptop with the lid closed.

After updating to macOS 12.2.1, when I close the lid, the external display goes black and does not come back on.

How do I keep my external display on after closing my laptop lid?

I am running macOS 12.2.1 on a 13-inch, M1, 2020 with LG Ultra HD Display (Model 27BK6U).

1 Answer 1


I just learned, which port it's plugged into matters.

The port closer to the user will allow the second display to be used with the lid closed, and the further port (closer to the internal display) will not.

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