iMac won't sleep

Discussion in 'Mac Basics and Help' started by rshire, Mar 26, 2009.

  1. rshire macrumors newbie

    Joined:
    Mar 17, 2009
    #1
    My iMac refuses to sleep no matter what sleep preferences I set or even if I try to sleep it manually (apple>sleep). It doesn't do anything. The display doesn't even dim like it used to a week ago. I don't have anything plugged in but the keyboard and regular mighty mouse, and restart doesn't change anything either.

    The Apple store installed a new hard drive on the computer a few days ago, since the 1.5 year old one randomly crashed and died. (AHH!) So I don't know what kind of funky things they might have changed, I'm just wondering if there's any simple maneuver I can do to make it sleep like it's supposed to!! Thanks!
     
  2. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #2
    Try flashing the PRAM. Reboot while holding command+option+P+R until you hear the startup chime a second time.
     
  3. rshire thread starter macrumors newbie

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    Mar 17, 2009
    #3
    I just tried that . . . no go!! The computer still refuses to sleep. When I try to manually sleep it, the only thing it does is make the mouse icon disappear, that's it.
     
  4. IJ Reilly macrumors P6

    IJ Reilly

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    Jul 16, 2002
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    Palookaville
    #4
    Shut it down, then unplug it from the wall for a few minutes. Plug back in and restart. See if that helps.
     
  5. DPA macrumors 65816

    DPA

    #5
    Try a Safe Boot. Hold the Shift key while booting up. It is normal, and should, take longer than usual to boot. For example, my MacBook Pro usually takes 1 minute to boot and takes anywhere from 12-15 minutes to do a Safe Boot.

    As a last resort, you could do an Archive and Install.

    David
     
  6. rshire thread starter macrumors newbie

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    Mar 17, 2009
    #6
    Hmm I just tried the safe reboot and the unplugging . . . it still does the same thing - nothing!!

    So if nothing else ends up working, what is an Archive and Install, and how would I do that? Thanks!
     
  7. rshire thread starter macrumors newbie

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    Mar 17, 2009
    #8
    Oooh, I see. I would really like to avoid that if possible . . . since I JUST reinstalled everything on the new hard drive over the past few days. Any other thoughts about how to fix it anyone??
     
  8. IJ Reilly macrumors P6

    IJ Reilly

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    #9
    Which is why I think reinstalling again is not a good idea. I'd bring this Mac back to the Apple Store.
     
  9. Wayne s macrumors regular

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  10. Stike macrumors 65816

    Stike

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    Jan 31, 2002
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    Germany
  11. rshire thread starter macrumors newbie

    Joined:
    Mar 17, 2009
    #12
    Haha yes, insomniMac . . .

    Those links looked very promising! However when I tried them, they were doing the same thing as when I did a manual sleep (apple>sleep): the mouse icon disappears and the screen "freezes" (the clock stops updating time, etc.) but the screen stays fully lit and doesn't go black like it's supposed to!!

    My very uneducated guess would be that there's something wrong with the programing of the sleep function???? Like, to where the command for blacking the screen is somehow missing?? I have no idea. . . .
     
  12. scott:mac macrumors regular

    Joined:
    Feb 10, 2008
    Location:
    Great Britain
    #13
    It is probably something plugged in via USB.

    Check your iPod isn't still connected or your External Hard drive etc.
    Also it may be your mouse it moving (Faulty Laser) and is causing your iMac to wake before it has begun sleeping.

    Try unplugging ALL USBs and click the power button once, Dont hold it in otherwise it will power down.
     
  13. Stike macrumors 65816

    Stike

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    Jan 31, 2002
    Location:
    Germany
    #14
    Oh, I misunderstood your problem.

    If your computer goes to sleep, but the screen remains on, I think you have a serious software problem or even a hardware fault.

    I would install OS X "clean" on an external drive for testing purposes, boot from it and check if the problem persists.

    If yes, I would have the computer replaced.
     
  14. IJ Reilly macrumors P6

    IJ Reilly

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    #15
    As he said, OSX has already been reinstalled -- recently. Doing it again isn't likely to be helpful. My guess is that this Mac has a hardware fault, which Apple missed the first time they looked at it.
     
  15. BlueRevolution macrumors 603

    BlueRevolution

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    Location:
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    #16
    Agreed. It sounds like a hardware or firmware issue to me.
     
  16. rshire thread starter macrumors newbie

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    Mar 17, 2009
    #17
    Well, safe to say having the computer replaced is entirely out of the question . . . it's not under warranty, aside from the new hard drive.

    So, since I don't have an external hard drive to do the test on, the general consensus would be that it's a hardware/firmware issue and to take it back to the Apple store for them to look at it??
     
  17. BlueRevolution macrumors 603

    BlueRevolution

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    #18
    Yes. Having them check it out should be around $50.
     
  18. IJ Reilly macrumors P6

    IJ Reilly

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    #19
    I'd protest any additional charges. It seems they may have charged you the first time for repairing the wrong issue. That's the position I'd take with them.
     
  19. rshire thread starter macrumors newbie

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    Mar 17, 2009
    #20
    Oh yeah, agreed: I do not plan on paying them any extra for repairs or whatnot. I just shelled out a few hundred on a new hard drive installation! The old hard drive was obviously messed up since it crashed completely, the question would be whether that's related to this other issue or not.
     
  20. IJ Reilly macrumors P6

    IJ Reilly

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    Location:
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    #21
    My theory is that the hard drive wasn't the cause of your problems in the first place. Let us know how this works out.
     
  21. rshire thread starter macrumors newbie

    Joined:
    Mar 17, 2009
    #22
    Ok, yeah I'll call them and see about taking it in again. Thanks for everyone's help! I'll update if I learn anything new. . . .
     
  22. rshire thread starter macrumors newbie

    Joined:
    Mar 17, 2009
    #23
    So, long overdue update in case anyone's interested in the results . . . .

    About an hour before my Genius Bar appointment like two weeks ago, the sleep function randomly started working again . . . go figure. But then the whole computer refused to shut down for a bit!! I took it in, but because by then it was working perfectly, they couldn't help me.

    One employee thought it could have just been caused by the new hard drive indexing and all . . . so who knows. It's been working fine so far!
     
  23. Stike macrumors 65816

    Stike

    Joined:
    Jan 31, 2002
    Location:
    Germany
    #24
    I didnt have the exact same sleep problem, but suddenly it is working again too!

    I dont know if it is related or not, but I changed the standard address book and calendar app back from Contactizer Pro to iCal and Address Book.app.

    Since then, the computer goes to sleep as set up in the preferences... weird!
     

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