OS X Mavericks: If your Mac won’t go to or stay in sleep

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If your Mac won’t go to or stay in sleep

If your Mac doesn’t go to sleep when you expect it to, or if it wakes up unexpectedly, you may need to change your sleep preferences or something may be waking your Mac.

  • Make sure the sleep settings are set the way you want. In Energy Saver preferences, use the slider that controls the computer’s sleep.
  • Other users may be waking your Mac remotely to use its shared resources. If you don’t want this to happen, open Energy Saver preferences, then deselect “Wake for network access.”
  • Bluetooth devices can wake your Mac. If you don’t want a Bluetooth keyboard or mouse to be able to wake the Mac, open Bluetooth preferences, click Advanced, then deselect “Allow Bluetooth devices to wake this computer.”
  • Key presses and mouse or trackpad clicks can wake your Mac. If your Mac wakes when you’re not present, something may be pressing the trackpad or mouse button, or keyboard keys.
  • Apps that access a disk can keep your Mac from going to sleep. For example, iTunes accesses your disk to read the songs it plays, and DVD Player accesses the optical disc drive to play movies.
  • People using shared services on your Mac can prevent it from sleeping. For example, they may be using a printer connected to your Mac or accessing shared files stored on it. In Sharing preferences, turn off any services you don’t need to use by deselecting the On checkbox next to the service.
  • If Spotlight is indexing your hard disk, your Mac won’t go to sleep. Click the Spotlight icon on the right side of the menu bar and check whether it says it’s indexing. Indexing your files can take several hours, depending on the number of files on your Mac.
  • Malfunctioning USB, FireWire, and Thunderbolt devices may keep your Mac from going to sleep. Disconnect those devices and see if your Mac goes to sleep. If it does, reconnect each device, one at a time, until you find the one that’s malfunctioning. Contact that device’s manufacturer for more information.
  • Some PCI extension cards intentionally prevent a Mac from going to sleep. Refer to the documentation that came with your card.
Published Date: Oct 20, 2015
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