iMac and problems with Sleep mode

Discussion in 'iMac' started by MrMacMini, Nov 18, 2011.

  1. MrMacMini macrumors regular

    Jun 4, 2009
    So Cal....
    For the last week it seems that my iMac (24" 2008 model) has been having issues staying in sleep mode.

    I put the computer in sleep mode and a few hours later the iMac either wakes up completely or the HDD starts working (screen still off but can hear the HDD working) without anybody physically touching it.
  2. Detrius macrumors 68000

    Sep 10, 2008
    Asheville, NC
    Maybe it's not actually going to sleep to begin with. Run the following to get an idea of whether this is the case:

    pmset -g assertions

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