iMac waking from sleep

Discussion in 'iMac' started by Wreckie, Aug 27, 2011.

  1. Wreckie macrumors regular

    Joined:
    May 9, 2011
    #1
    Every night I hear few times, when iMac wakes up from sleep, but it isn't going to stay awake, just puts it sleep again after some seconds. What could cause that problem?
     
  2. gr8tfly macrumors 603

    gr8tfly

    Joined:
    Oct 29, 2006
    Location:
    ~119W 34N
    #2
    It might do that if you have "Wake for network access" enabled in the Energy Saver preference pane (in System Preferemces).
     
  3. Wreckie thread starter macrumors regular

    Joined:
    May 9, 2011
    #3
    Thanks,
    Unchecked that box, will see if makes any difference.
     
  4. kcossabo macrumors member

    Joined:
    May 25, 2011
    Location:
    Virginia, USA
    #4
    My Mid-2011 27" iMac will not wake from sleep. Power 10 sec to reboot only way out.

    I opened an Apple Care ticket, did P-R Reset and Controller rest. Problem when away, and now it is back.
     

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