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Old Dec 19th, 2016, 03:11 PM   #1
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MBP doesn't sleep automatically

Just recently, my 2010 MBP (running El Capitan) won't go to sleep when left on its own -- it has to be put into sleep manually, and sometimes it will wake from sleep on its own. This has only been happening for a few weeks, and there were no major changes to the computer at that time. It's a fairly minor issue, but I'd still like to try and resolve it.

If you have any suggestions as to what might help, I'd love to hear them. I tried resetting the SMC but it didn't seem to change anything. Another possibility is to upgrade to Sierra, but I feel like I shouldn't have to do that just to resolve this issue. Thanks in advance for any suggestions!
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Old Dec 19th, 2016, 03:35 PM   #2
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I would run the freeware Onyx paying particular attention to running the periodic commands and flushing various system caches. Then I would go into system prefs and confirm/reset the Energy saver prefs for both battery and power supply operation.
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Old Dec 19th, 2016, 10:56 PM   #3
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Originally Posted by jlhopes View Post
Just recently, my 2010 MBP (running El Capitan) won't go to sleep when left on its own -- it has to be put into sleep manually, and sometimes it will wake from sleep on its own. This has only been happening for a few weeks, and there were no major changes to the computer at that time. It's a fairly minor issue, but I'd still like to try and resolve it.

If you have any suggestions as to what might help, I'd love to hear them. I tried resetting the SMC but it didn't seem to change anything. Another possibility is to upgrade to Sierra, but I feel like I shouldn't have to do that just to resolve this issue. Thanks in advance for any suggestions!
Upgrading over a sketchy OS is a recipe for disaster. Clear the issue(s) first. It may be that a clean install is called for. Is your El Cap install "clean" Or was it an upgrade (over and upgrade etc.). How long since the machine saw a true, nuke 'n' pave clean install. OSs develop niggling corruptions and hard disks develop bad sectors. Both of these are cured with nuke 'n' pave....
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Old Dec 20th, 2016, 09:48 AM   #4
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Thank you for the suggestions and advice. I did a fresh install of El Capitan in July, and then used Migration Asst to bring apps and data back over. I realize that's not a true "clean" install, but it is way easier! The last true clean instal was (I think) in 2014 under Mavericks. Everything was normal under El Cap until just recently, and it's only the sleep issue that's changed -- otherwise things are running normally. I would rather not do full clean install if I don't have to, but if it comes to that I guess I will. First, I will try running Onyx and see if that helps.
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Old Dec 20th, 2016, 10:09 AM   #5
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First try to uncheck "allow network calls to wake system from sleep" or something like that ( sorry, sitting in front of a Dutch system for the moment) in System Preferences > Energy for starters.
Maybe that's all you need.
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Old Dec 20th, 2016, 10:24 AM   #6
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First try to uncheck "allow network calls to wake system from sleep" or something like that ( sorry, sitting in front of a Dutch system for the moment) in System Preferences > Energy for starters.
Maybe that's all you need.
Thank you for the suggestion, but I have already tried that.
I wonder if simply restarting in Safe Mode might help? Will try that later today.
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Old Dec 20th, 2016, 01:03 PM   #7
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Thank you for the suggestion, but I have already tried that.
I wonder if simply restarting in Safe Mode might help? Will try that later today.


Doing so can help track the problem as it will disable all non-apple extensions and add-ons etc.

If so, the problem will then to be to find which one!!!
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Old Dec 20th, 2016, 02:31 PM   #8
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Also check System Preferences --> Users & Groups --> Login Items

...there may be something lurking in there of which you might not be aware.
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Old Dec 20th, 2016, 02:36 PM   #9
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So, the automatic sleep function worked fine in Safe Mode, but after booting up again in normal mode, it still does not go to sleep. The display goes dark at the time when it's supposed to, but the computer stayed awake at the point when it was supposed to sleep.

Any idea how to identify what extension/add-on it might be?
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Old Dec 20th, 2016, 02:38 PM   #10
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Also check System Preferences --> Users & Groups --> Login Items

...there may be something lurking in there of which you might not be aware.
Login items are: iTunesHelper, Dropbox, and Android File Transfer Agent. Would one of those cause an issue?
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