
The most common problems now are notifications, which seem to come from every man and his dog, many of which don’t appear entirely under your control. In addition to ensuring that your Mac isn’t offering a sharing service which could wake it up, open the Energy Saver pane and uncheck the item Wake for network access. Opening the lid of a recent laptop model or connecting it to mains power, which automatically wake it.Īpple explains in detail the Wake on Demand system which allows connecting clients to wake a sleeping Mac which is sharing to them, in this article, now sadly archived.To fix this, open the Bluetooth pane, click on the Advanced… button, and uncheck the last item, to Allow Bluetooth devices to wake this computer.

Bluetooth activity, typically other Bluetooth devices trying to connect.Check the Sharing pane doesn’t make that Mac a ‘server’ for any of these, and disable Wake on Demand (see below). Network activities which wake the Mac, including various types of sharing.The following events and activities can wake a Mac which is already asleep:

Processes listed as Yes at the top will prevent your Mac from sleeping, and need to be quit for that to occur. You can discover those by opening Activity Monitor, switching to its Energy tab, and clicking once on the head of the list Preventing Sleep. Network activities which wake the Mac (see below).

Sleep itself can be prevented by the following: The end result is that when they do want to use them again, perhaps the following morning, their batteries are partially discharged – more than they should had they remained asleep. A few Mac users have recently been complaining that their MacBooks/Pros/Airs keep waking from sleep.
