Macbook screen "flashes" when waking from sleep.

Discussion in 'MacBook Pro' started by reubs, Jan 4, 2007.

  1. reubs macrumors 68000

    Jun 22, 2006
    Lately when I wake my Macbook up from sleep the screen will "flash" like it does when Photo Booth takes a picture. I see the screen, then a flash, and then the screen is back to normal. There doesn't appear to be any other issues at play, but I'm wondering if others have had this problem, or if this is something that should concern me.

    Thanks for any opinions.
  2. whawhat macrumors 6502

    Jun 9, 2006
    mine does as well. really never thought about it till this post. is this a bad thing?
  3. someguy macrumors 68020


    Dec 4, 2005
    Still here.
    I'm sure someone will beat me to this, possibly with a better answer, but try opening System Preferences, clicking the Universal Access prefpane, and look in the "Hearing" tab.

    Uncheck "Flash the screen when an alert sound occurs".

    Does that help?

    EDIT: Looks like I'm faster than I thought. :cool:
  4. reubs thread starter macrumors 68000

    Jun 22, 2006
    No, that's not the "flash" that I'm experiencing, but it is pretty cool...

    I'm still trying to figure out the source of it b/c it did not just do it when I woke up the Macbook by raising the lid...
  5. Mac'Mo macrumors 6502a


    Aug 29, 2006
    flash? like flickering on? i dont think it happens to me at all
  6. Kodex macrumors member

    Jan 30, 2003
    It sounds like its your invertor kicking back on from a display sleep. Does the screen flash when you first turn on the computer? Does it flash if you force it to sleep with command option eject?
  7. EricNau Moderator emeritus


    Apr 27, 2005
    San Francisco, CA
    It's perfectly "normal" ...just very annoying.
  8. macmama macrumors regular


    Nov 26, 2006
    New Jersey
    This happens to me too. Glad I'm not the only one, b/c it really does look kinda "wrong" when it happens :confused:
  9. Igantius macrumors 65816

    Apr 29, 2007

    Not sure if I should be reviving this thread... noticed this sometimes happens with my MB... kinda annoying, but as long as it's gonna live, think I can live with it...
  10. carlobloks macrumors newbie

    Jul 28, 2008

    I have no idea if people are still concerned about the screen flashing during 'wake up'... but I think I found out why it does so, or at least how you make sure it does not flash anymore...

    System preferences>desktop&screensaver>screensaver... and if you then set the screensaver to start at NEVER the screen will no longer flash during 'waking up'

    good luck!
  11. Shannighan macrumors 6502a


    Jul 26, 2007
    Buffalo, NY
    this happens when you have the brightness setting lower then full.
    try turning the brightness all the way up, no flash, then turn it all the way down (not off) and boom... flash
  12. honuwebd macrumors newbie

    May 27, 2008
    Mine also does the flicker when it wakes up but has been doing it a lot more lately. Also about an hour ago I was working (typing up a paper) and my screen decided to flicker again. It lasted for about 1.5 seconds, but it was very noticeable. I've never seen nor heard of this before. Is it time to call apple? I don't want to wake up one day to find my screen can no longer turn on.
  13. mulletman13 macrumors 6502a


    Jul 1, 2004
    Los Angeles.

    None of these solutions have worked for me. Another thing I notice, is that after my computer has been asleep for a half hour or so, the backlight will turn on (the Apple will light up), but the computer will still be asleep.

    Anybody experience any similar situations?

  14. 2012Tony2012 macrumors 6502a


    Dec 2, 2012
    Same problem here... screen flickers when I wake up my Mac.
    Flickering goes away about 10 minutes though.

    And if I reboot it stops... but what a pain to reboot all the time :(

    Any fixes?
  15. WolfMB2008 macrumors member


    Oct 14, 2017
    United States
    i just did a smc reset and it kinda stopped, i ahve 2008 macbook unibody..

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14 January 4, 2007