All Biased

A blog mostly about Mac, iPhone & iPad use

Sleepy Mac? This is how you fix it

Does your Mac take long to wake up after sleep? There may be an easy fix.

When the Mac has been asleep for a while it writes everything it is working with to the hard drive to save energy and go into a standby mode. The downside to that is that it takes longer to wake up when it has to read everything back to RAM memory from the disk.

How long it takes until the computer writes the memory contents to disk varies, but you can set this time yourself. On my MacBook Air it was 70 minutes. I changed it to 12 hours so that it should wake up quickly every morning.


Make your Mac wake up faster by changing a setting in the Terminal:

  1. Open Terminal (it's in Applications > Utilities in OS X).
  2. Write sudo pmset -a standbydelay 43200 and press Enter.

You're done.

43200 is the number of seconds (12 hours) you want OS X to wait until it puts your Mac into deep sleep. Change it to anything you like.

I found this neat trick at OS X Daily.

Published 29 jan 2013 by Niklas Johansson
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