MacBook does not return from sleep after opening the lid

Discussion in 'Mac Basics and Help' started by holden57, Jul 25, 2009.

  1. holden57 macrumors member

    Joined:
    Jul 18, 2009
    #1
    Hello, I have found this problem, and I don't know how to fix it. Sometimes when I open the lid of my MacBook, it will not return from sleep and all I see is a black screen. I usually have to hold the on button until it turns on at this point. Does anyone know what I can do to fix this?
     
  2. J the Ninja macrumors 68000

    Joined:
    Jul 14, 2008
    #2
    Is this consistent? If it is, trying punching this into the Terminal:

    sudo pmset -a lidwake 1


    If it's an intermittent thing....then I'm stumped.
     
  3. -tWv- macrumors 68000

    -tWv-

    Joined:
    May 11, 2009
    Location:
    Ohio
    #3
    Did you upgrade RAM recently? There have been problems in the past with people upgrading RAM and the macbook has problems with waking up from sleep. This deals with a problem with copying the sleep image from the HD back to the RAM. See this forum for possible solutions.
     
  4. holden57 thread starter macrumors member

    Joined:
    Jul 18, 2009
    #4
    As far as I can tell it's a problem that just comes and goes, it doesn't seem to be consistent at all.
     

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