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When waking Macbook Air 2012 from the Login Screen, the display flashes, then works normally. Mildly concerned.

12262 Views 72 Replies Latest reply: May 17, 2013 6:20 PM by gary oldknow RSS
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davidnave Level 1 Level 1 (10 points)
Currently Being Moderated
Sep 20, 2012 7:45 AM

I have only noticed this behavior when no users are logged in, and the computer is put to sleep by closing the clamshell. It also only appears to happen after an extended sleep, meaning 30 minutes or more. I open the clamshell, the backlight comes on, I see the login screen, then the screen flashes like when Photo Booth takes a picture, then the computer works normally. This is not a great concern, but it is unusual. It doesn't happen when a user is logged in. It doesn't happen during boot. I am running 10.8.2, and do have power nap enabled. I have noticed the behavior both when running on the power adapter and on the battery. No Accessibility functions enabled. Trying to isolate the issue, and reaching out for others with same behavior. Cheers.

MacBook Air, OS X Mountain Lion (10.8.2)
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