Ask HN: How can you check whether a MacBook Pro turns off screen when closed?

1 pointamichail3 comments

It may not turn off the screen if there is a hardware or software issue. So is there a way to check?

I cut a window in my fridge to make sure the light goes out (and the yogurts aren't partying after midnight).

But because I am worried about observer effects [0] I sometimes hide around the corner and jump out on the fridge to try and surprise it,

So far, all quiet.

[0] https://en.wikipedia.org/wiki/Observer_effect_(physics)

Close the lid slowly, while keeping your eyes in a place so you can still see the screen and the keyboard. The screen will turn off before the laptop is completely shut.

That works, thanks.

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