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iMac Starts Up Automatically at Midnight. Why?

15179 Views 69 Replies Latest reply: Jul 28, 2008 5:26 PM by Damozeljane RSS
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Sean mcmlxxv Calculating status...
Currently Being Moderated
Nov 28, 2007 7:31 AM
Since I installed Leopard my (intel) iMac's been automatically starting up at midnight on certain nights of the week (Tuesday night is one).

Does anyone know why this is happening and more importantly how I can stop it?
iMac G4 & iMac 24" C2D 2.16GHz, Mac OS X (10.5.1)
  • jarik Level 4 Level 4 (1,005 points)
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    Nov 28, 2007 7:35 AM (in response to Sean mcmlxxv)
    Hello,

    You don't mention it, so: did you check whether a schedule to start has been defined in Energy Saver in System Preferences?
    MacBook Pro, Powerbook G4, Mac OS X (10.5.1)
  • jarik Level 4 Level 4 (1,005 points)
    Currently Being Moderated
    Nov 28, 2007 11:11 AM (in response to Sean mcmlxxv)
    Next, I would look for clues in your logs (open the Console application), particularly the console log and the system log. Also, checking in Activity monitor right after it wakes up might give a clue.

    I haven't seen this problem, sorry for not being more helpful.

    Message was edited by: jarik
    Are you connected with a cable or wireless? If wired, could someone be sending an "administrative ping"
    MacBook Pro, Powerbook G4, Mac OS X (10.5.1)
  • freighterman Level 1 Level 1 (35 points)
    Currently Being Moderated
    Nov 28, 2007 12:42 PM (in response to Sean mcmlxxv)
    Sean,

    Make sure "Wake For Administrative Access" is disabled in the Wake Options of Energy Saver preferences.

    Make sure you have no third party software that is causing system to wake.

    I had the same problem with TV tuner...it was waking to go on line to get up date program schedule. I changed program preferences so that this could only be done manually.
    iMac. 24", Mac OS X (10.5.1), Elgato TV Tuner, 2GB Ram, Parallels
  • freighterman Level 1 Level 1 (35 points)
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    Nov 30, 2007 4:23 PM (in response to Sean mcmlxxv)
    Sean,

    Try this:

    Go to /library/Caches and delete all the files in this folder. Don't delete the Cache folder itself.

    If this makes you nervous, create a folder on your desktop and move files to this folder. This way they can be restore should this be necessary. OS will create new cache files as necessary.

    I have done this several times without any problems. It also can be done with a terminal command, but the way I have suggested is safe.

    If this doesn't work at least you have cleaned out your caches.
    iMac. 24", Mac OS X (10.5.1), Elgato TV Tuner, 2GB Ram, Parallels
  • dcrobinson Calculating status...
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    Dec 1, 2007 11:59 PM (in response to freighterman)
    Any success with this, Sean?

    My Macbook does exactly the same thing. It even manages to wake up from a full shutdown!

    I suspect EyeTV, because yesterday morning the fans were full on and EyeTV had crashed. However, I have EyeTV guide updates set to manual, and then to be doubly sure I set the guide to "none". I've even tried unplugging the DTT stick. Makes no difference.

    WOL is turned off too.
    Macbook, Mac OS X (10.5.1)
  • Richard Parsons Calculating status...
    I have the same problem. In fact it's the only one I am having with Leopard.

    Have reset PRAM, checked all the schedules in Power Saving, stopped EyeTV auto checking and there is no clue in the system log - "kernel System Wake".

    Not only does it wake from sleep but it will also switch on so rules out most things
    iMac 24" Core 2 Duo (late 2006), Mac OS X (10.5.1), Work IBM Laptop - Win XP Pro
  • freighterman Level 1 Level 1 (35 points)
    Make sure that in the Energy Saver options that the wake options and schedule options are all disabled.

    Even so, the EyeTV Helper is running as a user process and EyeConnectWatchD is running in root.

    I'd contact support at Elgato as this may not be Leopard problem. I don't have this issue simply because my system is never completely shut down.
    iMac. 24", Mac OS X (10.5.1), Elgato TV Tuner, 2GB Ram, Parallels
  • xupi Calculating status...
    I've the same problem. Any solution???????????
    iMac G5 + iSight 24", Mac OS X (10.5.1)
  • Richard Parsons Level 1 Level 1 (70 points)
    Currently Being Moderated
    Dec 3, 2007 11:18 AM (in response to freighterman)
    I can't see any EyeTV related processes running root or otherwise prior to it sleeping (then waking at midnight).

    Unplugging EyeTV didn't help either. USB hub is next to be unplugged.
    24" Core 2 Duo, Mac OS X (10.5.1), Work IBM Laptop - Win XP Pro
  • actuarius Level 1 Level 1 (0 points)
    Currently Being Moderated
    Dec 4, 2007 12:06 AM (in response to Sean mcmlxxv)
    Hi

    I had a similar problem this morning as well.

    I remember shutting down my macbook in the night, but in the morning (half asleep) I heard a familiar chime, like the one when you power on your mac.

    I look around and saw my macbook powering on by itself! I had no pre-programmed schedule, nor did i put it to sleep and the lid may have woke it; It was powered down! I watched it turned off the night before.

    This is all too strange to me. Suddenly I regret upgrading to Leopard, given this and some other unusual encounters I have this week with my mac
    macbook, Mac OS X (10.5.1), 1.256 gb RAM
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