[shanghaied]

I've had my C2D MacBook a little under two months. Apple replaced the screen the first week and logic board died for unknown reasons and was replace the third week under warranty. Now the screen flashes brightly once at start up and wake up from sleep. Didn't use to do this...I have a second MacBook with the same configuration that doesn't do this. I'd hate to send it in again.

- should I be concerned with the flashing screen?
- does anyone else's screen do this?

Thank you in advance.

[adamfishercox]

My MacBook screen always flashed when I lifted the lid to wake it from sleep... It's just the backlight turning on. and then turning off again for whatever reason.

[C.A.T.S. CEO]

My Core Duo does it, its normal.

[hookem2oo7]

I believe it has something to do with safe sleep. My macbook used to do it, but after disabling safe sleep it stopped...

[shanghaied]

Thanks guys...at least I know I'm not alone...just bugs me knowing that it never use to do that...

hookem2007....can you explain 'safe seep'...can't find anything in Energy Saver / Spotlight ...how do you enable / disable 'safe sleep'?

Thanks again...new to Mac

edit: oops, never mind..googled and answered my own question...