HT201177 Sometimes the screen on my new macbook pro slowly pulses from very light to a rather dark screen. This happens both whether or not it's plugged in. It's sporadic, and unpredictable. I'd love an answer. Thanks.

Sometimes the screen on my new Mac Book Pro slowly pulses from very light to a darker screen than I like. This is an intermittent problem and happens whether the computer is plugged in or on battery. Hope someone can help. Thanks. Ellen 206

That is the automatic ambient light sensor doing it's thing.
Depending on what machine you have, try turning the screen brightness all the way up. It will buttons on the top row, usually the F-1 for dimmer, F-2 for brighter
Also you can go to sytem preferences>display and un check the automatically adjust brightness for ambient light.
Hope this helps

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