Mac has problems sleeping at night

Discussion in 'Mac Basics and Help' started by pauldacheez, Apr 22, 2010.

  1. pauldacheez macrumors newbie

    Joined:
    Feb 15, 2010
    #1
    Hello again, all!

    My iMac seems to wake up often in the middle of the night and in the day when I'm at school. I was wondering if there's an app/pill that can attempt to do the opposite of Caffeine: keep my Mac asleep at night. Does anyone know of such a thing? I doubt it exists, but then again sometimes I doubt I exist.
     
  2. Cboss macrumors 6502

    Joined:
    Dec 11, 2008
    Location:
    Colorado
    #2
    I know that there's an application that can put your Mac to sleep, but I can't think of the name right now. I'm sure others will know.

    But here's a link to Apple's site with info about sleep issues.

    http://support.apple.com/kb/HT1776
     
  3. Gregg2 macrumors 603

    Joined:
    May 22, 2008
    Location:
    Milwaukee, WI
    #3
    Macbien? ;)

    Is there perhaps a process running in the background that prevents sleep?
     
  4. H00513R macrumors 6502a

    H00513R

    Joined:
    Mar 12, 2010
    Location:
    Indiana
    #4
    I've had this problem the last week also. After reading the Apple site, I think it's my bluetooth because my mouse is low on batteries. Thanks for the help!
     
  5. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
  6. Mork macrumors 6502

    Joined:
    Jan 9, 2009
    #6
    We had this problem too. In our case, the culprit turned out to be a USB cable connect to an (off!) HP LaserJet printer. Unplugged USB and right to sleep the iMac went.

    HTH
     
  7. bmcgonag macrumors 65816

    bmcgonag

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    Mar 20, 2007
    Location:
    Texas
  8. pauldacheez thread starter macrumors newbie

    Joined:
    Feb 15, 2010
    #8
    All good suggestions! The problem, I should clarify, isn't that it can't sleep, it's that sometimes it wakes up without warning. I don't mean the wake-up-with-screen-off-and-go-back-to-sleep kind caused by Bonjour, but the kind where I put it to sleep, go to bed, and wake up with it awake. There's nothing I can see waking it up. This isn't much of a problem to me, really, but hey, yesterday was Earth Day, gotta save some watts :)
     
  9. Gregg2 macrumors 603

    Joined:
    May 22, 2008
    Location:
    Milwaukee, WI
    #9
    Of course you can't see what's waking it up, you're asleep. ;)
    There's gotta be something that runs intermittently causing the "insomnia".
     

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