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My macbook goes to sleep by itself

3397 Views 20 Replies Latest reply: Apr 4, 2014 4:15 AM by Oravec RSS
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taramx Calculating status...
Currently Being Moderated
Jan 27, 2013 5:45 PM

My early 2011 macbook pro goes to sleep on its own in the middle of whatever I'm doing. It's done it maybe four times in the last few days. I can get it to wake by pressing the power button. It's running Lion. I'm not very computer-literate... Can anyone suggest a cause or a solution?

MacBook Pro
  • a brody Level 9 Level 9 (62,145 points)
    Currently Being Moderated
    Jan 27, 2013 5:51 PM (in response to taramx)

    Did you buy AppleCare?

  • leroydouglas Level 6 Level 6 (13,415 points)
    Currently Being Moderated
    Jan 27, 2013 5:51 PM (in response to taramx)
  • a brody Level 9 Level 9 (62,145 points)
    Currently Being Moderated
    Jan 27, 2013 5:52 PM (in response to a brody)

    As for what's happening, double check that the only thing hooked up to the computer is power.   Then see what your Apple menu -> System Preferences -> Energy Saver and Security Settings have to say about when it goes to sleep.

  • a brody Level 9 Level 9 (62,145 points)
    Currently Being Moderated
    Jan 27, 2013 6:04 PM (in response to taramx)

    Try the SMC suggestion, and if it fails, also try to run the hardware test:

     

    http://support.apple.com/kb/HT1509

    If neither reveals anything logical, then yes, call them.

  • leroydouglas Level 6 Level 6 (13,415 points)
    Currently Being Moderated
    Jan 27, 2013 6:17 PM (in response to taramx)

    taramx wrote:

    I have the macbook to go to sleep after 3 hours (I generally just close the lid or shut it down if it's not in use).

     

    I would also turn that off, this could be a problem.

     

    For now set it to never and see the results.

  • Linc Davis Level 10 Level 10 (108,120 points)
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    Jan 27, 2013 10:09 PM (in response to taramx)

    If you have more than one user account, you must be logged in as an administrator to carry out these instructions.

     

    Triple-click anywhere in the line below to select it:

     

    sudo pmset -g log | tail -50

     

    Copy the selected text to the Clipboard (command-C).

     

     

    Launch the Terminal application in any of the following ways:

     

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

     

    ☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

     

    ☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.

     

    Paste (command-V) into the Terminal window. You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. You don't need to post the warning. If you don’t have a login password, you’ll need to set one before you can run the command. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.

    The command may take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear.

     

    Post any lines of output that appear below what you entered — the text, please, not a screenshot.

  • Linc Davis Level 10 Level 10 (108,120 points)
    Currently Being Moderated
    Jan 27, 2013 11:36 PM (in response to taramx)

    Please post a screenshot of the Terminal window showing what you did.

  • Linc Davis Level 10 Level 10 (108,120 points)
    Currently Being Moderated
    Jan 28, 2013 5:27 AM (in response to taramx)

    Update this thread if it happens again.

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