M1 MacBook Air display automatically dims

Problem with Display automatically dimming down to nothing


The screen on my M1 Macbook air (c2020) keeps turning itself off ... I have another monitor attached and that stays at full brightness - but I can't figure out why the built in screen on the macbook air keeps diminishing ...


I have AUTOMATICALLY ADJUST BRIGHTNESS turned off!


darned annoying! Does anybody have a suggestion? Grateful for all feedback!

MacBook Air 13″, macOS 26.1

Posted on Dec 6, 2025 10:24 AM

Reply
2 replies

Dec 7, 2025 6:51 AM in response to mulberry58

hey, thank you for the feedback.


I should have mentioned, this is not while using the battery—this is while the unit is connected to power.


In fact, I do NOT remember an incident of this occurring while I was using the battery (not connected to power).


let me look at those battery settings - thanks (but I wonder if they only apply when using the battery power) thanks!


w

M1 MacBook Air display automatically dims

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