Why does my iMac spontaneously wake up?

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randianrandian
Posted:
in macOS edited January 2014
I have a late 2010 iMac, and sometimes it spontaneously wakes up, usually within a minute or two of being put to sleep. Other times it spontaneously wakes up during the night. I can tell because if it's waking up from a true sleep, the wifi connection takes a few seconds to start up, but when it's just a blackened screen the wifi is instantly available.

Comments

  • Reply 1 of 10
    kalikali Posts: 634member
    I also experienced this problem a few times with an Mac mini. I never knew why.
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  • Reply 2 of 10
    randianrandian Posts: 76member
    Quote:
    Originally Posted by Kali View Post


    I also experienced this problem a few times with an Mac mini. I never knew why.



    Generic problem with 10.6.6? Sometimes my iMac will wake up a few seconds after I put it to sleep, before I've even had time to stand up from my chair.
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  • Reply 3 of 10
    dr millmossdr millmoss Posts: 5,403member
    Do you have a sleep schedule set?
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  • Reply 4 of 10
    randianrandian Posts: 76member
    Quote:
    Originally Posted by Dr Millmoss View Post


    Do you have a sleep schedule set?



    No, nor do I have any software set to automatically run.
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  • Reply 5 of 10
    dr millmossdr millmoss Posts: 5,403member
    Quote:
    Originally Posted by randian View Post


    No, nor do I have any software set to automatically run.



    I ask because I am interested to know whether the Mac goes to sleep on its own. I would test that.



    Also, make sure "wake for network access" is deselected in the Energy Saver preferences.
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  • Reply 6 of 10
    randianrandian Posts: 76member
    Quote:
    Originally Posted by Dr Millmoss View Post


    Also, make sure "wake for network access" is deselected in the Energy Saver preferences.



    It is.
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  • Reply 7 of 10
    dr millmossdr millmoss Posts: 5,403member
    I still suggest you try setting a sleep time and seeing if it works. Disconnect any USB or Bluetooth devices or external hard drive you may have connected. You could also try reseting your PRAM.
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  • Reply 8 of 10
    randianrandian Posts: 76member
    Quote:
    Originally Posted by Dr Millmoss View Post


    I still suggest you try setting a sleep time and seeing if it works.



    If by "set a sleep time" you mean set it to sleep after X minutes of inactivity, that works just fine.
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  • Reply 9 of 10
    dr millmossdr millmoss Posts: 5,403member
    Good, but I made a number of other suggestions too.
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  • Reply 10 of 10
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