Whenever my MBP 9.1 is in sleep mode and plugged in and I unplug the charger, machine turns on and stays on for about 2 minutes and then gets to sleep again.

Is there something I can change so when it's in sleep mode and I unplug or plug charger, stays at that state and doesn't hibernate or hybrid sleep or whatever it's name is given by Apple?

I basically want to disable hibernate altogether by automatic means.

My OS X version is 10.9.4.



Go to System Preferences > Energy Saver. Change the sleep settings for both on Battery and While charinging. enter image description here

Alternatively you could use NoSleep to make sure your MBP never goes to sleep.

  • I do want the machine to go to sleep, I don't want it to go to hibernate mode, i.e. writing memory's content on hard disk, which takes a lot of time and prevents me to unplug the machine and be good to go. – idn Sep 20 '14 at 19:04
  • @user3249323 check your mode by running this command on terminal > pmset -g | grep hibernatemode – Jash Jacob Sep 21 '14 at 1:11
  • It returns 3 which as I searched is default for modern MBP's. So how can I have sleep when I close the lid but no hibernation or basically any activity that writes memory content on hard disk? hibernate mode 0? – idn Sep 22 '14 at 15:33

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