MacBook Pro goes to sleep without any reason

Discussion in 'MacBook Pro' started by nipponfan, Apr 24, 2009.

  1. nipponfan macrumors regular

    Joined:
    Nov 10, 2008
    Location:
    Austria
    #1
    This happened to me a few times lately: my pro is going into standby without any apparent reason and wakes itself up again instantly. It happened on battery and on AC power, I didn't run any special progams, as far as I can remember I was just watching movies with QuickTime.
    I got all updates and running nothing special. Any idea how to fix this?
     
  2. edblor macrumors regular

    Joined:
    Jan 15, 2008
    #2
    Does it happen when you are using it, for example, when typing, or using the trackpad/mouse?

    Or is it playing a movie for a period of time, then going to sleep?

    If the latter, I would say it is going to sleep after an idle period of time. Check your display settings.
     
  3. Illicit macrumors 6502

    Joined:
    May 14, 2007
    Location:
    Waterloo, ON
    #3
    Check your System Preferences -> Energy Saver settings.
     
  4. nipponfan thread starter macrumors regular

    Joined:
    Nov 10, 2008
    Location:
    Austria
    #4
    Believe me it's not that - both on battery and ac it's set to never go to sleep.
    Besides I am always doing somthing while watching a movie - surfing, IM, etc. I have really no idea what else it could be.
     
  5. MooCow macrumors newbie

    Joined:
    Aug 25, 2007
  6. Guy Mancuso macrumors 6502a

    Joined:
    Mar 28, 2009
    #6
    I go to sleep for no good reason myself. What's the issue:)

    Just had to be said. But when quicktime is running things like the mouse and all that are not moving to keep it awake . It is just a open window so i am pretty sure and this has happened to me when running a color calibration it will go to sleep. I think you actually need to be doing something to keep it awake and even a DVD movie this could occur. I think sleep mode is dependent on key strokes and mouse being used.
     
  7. jpur macrumors member

    Joined:
    Oct 15, 2008
    #7
    Do you have any watches or bracelets that contain any magnets? This may be the cause.
     
  8. Illicit macrumors 6502

    Joined:
    May 14, 2007
    Location:
    Waterloo, ON
    #8
    I highly doubt that is the cause.
     
  9. J the Ninja macrumors 68000

    Joined:
    Jul 14, 2008
    #9
    When it wakes up, OS X records in the system.log file both why it woke up and why it had gone to sleep. See what it says.
     
  10. gizmo66 macrumors newbie

    Joined:
    Apr 24, 2009
    #10
    Are you using a cellphone and setting it down on the case? That causes my MacBook Pro to go to sleep and based on the cause, anything with a magnet in it will probably do the same. More details at the end of this thread:
    http://forums.macrumors.com/showthread.php?t=690152

    here's the relevant bits of the log file:
    Apr 24 18:25:02 kernel[0]: Going to sleep
    Apr 24 18:24:58 kernel[0]: System SafeSleep
    Apr 24 18:25:02 kernel[0]: sleep
    Apr 24 18:25:02 kernel[0]: Wake reason = EC
    Apr 24 18:25:02 kernel[0]: System Wake
    Apr 24 18:25:02 kernel[0]: Previous Sleep Cause: 5
     
  11. nipponfan thread starter macrumors regular

    Joined:
    Nov 10, 2008
    Location:
    Austria
    #11
    Thanks, I think this is could be the reason! I use a Nokia 6500 slide which has a steel casing - it might have touched my pro since it's always laying next to it. I will check that the next time it happens, but I think this is what is causing it.
     
  12. ubestbsteppin macrumors regular

    Joined:
    May 23, 2008
    #12
    OP, had this same issue about a month after getting my UMBP (around December). Geniuses were perplexed and I ended up sending it to Apple. They replaced the logic board I believe and all is well now. Good luck!
     
  13. Warranty Voider macrumors 6502

    Joined:
    Aug 27, 2008
    Location:
    Maine, US
    #13
    Yup. MBPs know when the lid is closed by using a magnetic sensor. When you place a magnet on the middle right hand side of your laptop, it will go to sleep and then wake back up when the magnet is gone.
     
  14. chaos86 macrumors 65816

    chaos86

    Joined:
    Sep 11, 2003
    Location:
    127.0.0.1
    #14
    Holy crap it did it!

    Now I have to start that huge FTP transfer over again...
     
  15. Aaleck macrumors 6502a

    Aaleck

    Joined:
    Oct 11, 2007
    Location:
    Michigan, USA
    #15
    Haha, I hate that. :p
     

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