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  1. #1


    Member Since
    Nov 06, 2006
    Posts
    23
    Going to Sleep???
    For some reason my iMac no longer goes to sleep after 20 minutes of being idle like it used to. I havent installed any new applications recently and it just stopped going to sleep. I come back an hour or two after using it and the monitor is still on. I've been having to manually make it go to sleep.

    I checked the energy saver options in system preferences and it correctly shows that my monitor display should be going to sleep after 20 minutes.

    Help!!

  2. #2

    shahvikram123's Avatar
    Member Since
    Nov 16, 2006
    Location
    UK, London
    Posts
    638
    Specs:
    13 inch Macbook Pro Retina, 2.7ghz, 128gb SSD
    If something is downloading then I don't think your mac will go to sleep...maybe thats why...

  3. #3


    Member Since
    Nov 06, 2006
    Posts
    23
    unfortunately thats not the case. I have all applicatons closed and nothing is downloading. Still wont go to sleep.

  4. #4


    Member Since
    Jun 17, 2007
    Posts
    15
    it is unfourtunately an insomniac, what you need to do is crush up a fiew zambian into the keyboard... that will put it to sleep... permanently

  5. #5

    XMARLTONX's Avatar
    Member Since
    Mar 14, 2007
    Location
    Marlton, NJ
    Posts
    852
    Specs:
    3.06 iMac i3|12GB|500GB
    Try going into

    System Preferences>Energy Saver>Sleep

    and ajusting the time.

  6. #6


    Member Since
    Nov 06, 2006
    Posts
    23
    still doesnt work. I adjusted the time but ti still only sleeps when I force it manually

  7. #7


    Member Since
    Jun 18, 2007
    Posts
    84
    Do you have a usb device plugged in? Like a midi keyboard? That might keep it awake?

  8. #8

    XMARLTONX's Avatar
    Member Since
    Mar 14, 2007
    Location
    Marlton, NJ
    Posts
    852
    Specs:
    3.06 iMac i3|12GB|500GB
    Quote Originally Posted by professorjay View Post
    Do you have a usb device plugged in? Like a midi keyboard? That might keep it awake?
    I dont think that would. What about calibrating the battery?

  9. #9

    snoslicer8's Avatar
    Member Since
    Jul 18, 2006
    Location
    Saint Louis, MO
    Posts
    471
    Specs:
    15" Unibody MBP 2.4 Ghz C2D, 2 GB RAM, 250 GB HDD, 320 GB Time Machine HDD, 1 TB Ext Media Drive
    This is an iMac, it doesn't need battery calibration. What you need to do is reset the PMU or SMC, whatever they're calling it now (Power Management Unit, System Management Controller, respectively). To do this, do the following:

    1. Shut down the computer
    2. Unplug the power adapter and ALL OTHER CABLES (USB, firewire, everything).
    3. Hold down the Power button for AT LEAST 10 seconds. To reset my friend's, I hold it down usually for 20-30 seconds.
    4. Plug everything back in, save the power cable for last.
    5. Power on the computer.

    This process resets the PMU or SMC, which is the logic board chip that controls how your Mac sleeps/wakes, among many other things. Good luck!
    MacBook Air Unibody Core i5 1.8 GHz, 4 GB RAM, 128 GB SSD, iPhone 4S 32 GB White

  10. #10


    Member Since
    Jun 15, 2007
    Location
    New York, NY
    Posts
    270
    Quote Originally Posted by snoslicer8 View Post
    This is an iMac, it doesn't need battery calibration. What you need to do is reset the PMU or SMC, whatever they're calling it now (Power Management Unit, System Management Controller, respectively). To do this, do the following:

    1. Shut down the computer
    2. Unplug the power adapter and ALL OTHER CABLES (USB, firewire, everything).
    3. Hold down the Power button for AT LEAST 10 seconds. To reset my friend's, I hold it down usually for 20-30 seconds.
    4. Plug everything back in, save the power cable for last.
    5. Power on the computer.

    This process resets the PMU or SMC, which is the logic board chip that controls how your Mac sleeps/wakes, among many other things. Good luck!
    DUN DUN DUN.

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