Issues with backlight when waking from sleep.

Discussion in 'MacBook Pro' started by Summersify, Nov 1, 2011.

  1. Summersify macrumors member

    Joined:
    Oct 29, 2011
    Location:
    UK
    #1
    Hi all,
    I recently bought a Build to Order Early '11 MacBook Pro (ahh yeah!), but recently when it has been waking from sleep the backlight just doesn't wake with the rest of the computer. Everything is on but the backlight. If viewed from the right angle you can see that the display itself it on. So what I have to do is press F1 (dims the backlight usually) which returns everything to normal. Why would this be happening? It only usually happens after I've been using it for a while and then closing it for about 5 minutes. Doesn't seem to be a hardware issue.
    Any thoughts or solutions? :confused:

    Thanks in advance :)
     
  2. Mersailios macrumors regular

    Joined:
    Oct 23, 2011
    #2
    Have you attempted to reset the parameter RAM (also known as "PRAM")? To reset your MacBook Pro's parameter RAM:

    1. Turn your MacBook Pro off.
    2. Press the power button to turn your MacBook Pro on.
    3. Hold down Command-Option-P+R until you hear the computer chime twice.
     
  3. Summersify, Nov 1, 2011
    Last edited: Nov 1, 2011

    Summersify thread starter macrumors member

    Joined:
    Oct 29, 2011
    Location:
    UK
    #3
    I can't really say when it works unless it happens again, but thanks for your help.

    This is off subject from the original post but what is PRAM usually used for? I'm interested :)
     
  4. Mersailios macrumors regular

    Joined:
    Oct 23, 2011
    #4
    Taken from the Apple Support website:

    For more information on what information is stored in the parameter RAM, please see http://support.apple.com/kb/ht1242.
     
  5. Summersify thread starter macrumors member

    Joined:
    Oct 29, 2011
    Location:
    UK
    #5
    The problem has returned...

    Does anyone else have any ideas?
     

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