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JohnDoe98

macrumors 68020
Original poster
May 1, 2009
2,488
99
Just curious if anyone else is having a similar issue and I'm wondering what might be causing it.

When I watch a movie in Quicktime on my 13" Haswell RMBP , often the screen will randomly change brightness, suddenly becoming a touch brighter for a few seconds (so things will look a little washed out momentarily, as if I just hit the F2 button to increase brightness). This happens without any user action. It also frequently happens when I move my mouse. I have auto-brightness turned off in system preferences and never had this on my 15" 2012 RMBP. It's very noticeable in dark environments and rather annoying. Thoughts?
 
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