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Level 1

8 points

MacBook Pro wakes from sleep at connect/disconnect AC power

I've noticed that when my MacBook Pro 2012 (MacBookPro9,2) is shut and sleeping and I either plug in or remove the MagSafe AC power plug, it temporarily wakes from sleep for about a minute. "Wake on AC Change" is set to "No" according to System Information, as is "Wake for network access" so I don't know why this would be happening. It never occured with my old 2009 MacBook Pro. Is this a change with Mountain Lion, a change with the new MacBooks, or is there some other setting I missed that should be shut off?

MacBook Pro, OS X Mountain Lion (10.8.2), MacBookPro9,2

Posted on Jan 9, 2013 11:39 AM

47 replies

Dec 30, 2016 10:12 AM in response to vince730

I purchased two 13" MacBookPro9,2 just before they become discontinued. I need optical drives on my computers.

I find this behavior not just very, very annoying but it is also dangerous because the potential risk of overheating and HDD damage is real.

I simply can not believe that Apple still did not take care of this issue. After so many years.

Come on, Apple! Get yourself involved!

This particular model is the longest produced MacBook Pro ever. There is a reason to put some efforts and finally fix this software issue.

Running El Capitan, Version 10.11.6 (15G1212).

Wake reason: EC.ACAttach (Maintenance)

Wake reason: EC.ACDetach (Maintenance)

Apr 23, 2017 7:44 AM in response to vince730

I have the same issue!

I'm using 13" MacBookPro Non-retina, mid-2012.

My system is Sierra 10.12.4.

MacBook Pro wakes from sleep at connect/disconnect AC power