My MacBook Pro is not sleeping when I close the lid on battery

I purchased my macbook back in 2011, and this problem just started. When I unplug and close my computer to put it in my backpack for school, it does not sleep. I take it out and its very hot and has lost a large amount of battery. My energy saver controls say it should sleep after 10 minutes of inactivity, but either way it should sleep when I close the lid. I don't have any sharing options checked or any running apps that should be keeping it awake so I have no idea what could be causing this


  1. Have a look at this answer which indicates the commands to help you analyse if any process is blocking the sleep of your MacBook.

  2. If nothing is blocking it, then look at :

    egrep -i 'sleep|wake' /var/log/kernel.log
    

    and look if you see a sleep line at the time you close the lid. If you don't, look at any information message in:

    /var/log/kernel.log
    

    around the instant this event should have happened.

  3. Create a test account, close your session, and open one with this test account. Is your MacBook entering sleep when you close the lid?