iMac Display Not Sleeping

Discussion in 'iMac' started by dmfactor, Dec 6, 2009.

  1. dmfactor macrumors newbie

    Nov 25, 2009
    I've just recently noticed that my iMac display won't go to sleep, despite my energy settings should turn it off after 5 minutes of inactivity. The only difference I can think of is that instead of my Mighty Mouse, I now use a Microsoft standard USB mouse. Is the Microsoft mouse somehow keeping the iMac "active"? What else could just suddenly stop my iMac display from turning off automatically? Any advice is appreciated, thanks.
  2. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    Try it with your Magic Mouse. Disconnect the MS mouse and connect the  mouse and see if it helps. Repair your permissions with Disk Utility as well
  3. dmfactor thread starter macrumors newbie

    Nov 25, 2009
    Fixed it! Thanks for the suggestions, it seems repairing the disk permissions did the trick.

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