iMac wakes up from sleep automatically

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iMac wakes up from sleep automatically

System: brand new (1 week old) 27'' i5 iMac

Problem: When I put this iMac into sleep, it wakes up automatically. Sometimes right away, sometimes few minutes later... I just did a clean install of snow leopard and updated everything via Software Update, but same problem. So, I'm guessing it might be a hardware issue?

Checked the console and it said:

"The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000), just caused a wake because it signaled remote wakeup"

Any help is appreciated.

Thanks,

27 i5 iMac, Mac OS X (10.6.2)

Posted on Mar 17, 2010 8:41 PM

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Answer 1

Mac-Medic

Level 6

17,301 points

Mar 17, 2010 10:05 PM in response to tryin012

"The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000), just caused a wake because it signaled remote wakeup"

If you have a hub attached, that could be the cause. Hubs are notorious for that issue. My Power Mac G5 done the same thing. Sometimes after putting it to sleep about three times, it would stay sleeping.

Dave M.
 MacOSG: An Apple User Group  iTunes: MacOSG Podcast  Follow us on Twitter: MacOSG

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Answer 2

tryin012 Author

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Mar 17, 2010 10:35 PM in response to Mac-Medic

I am certain it's not the USBs. I have disconnected all USBs and tried to put my iMac to sleep but it wakes up automatically. So, I'm guessing it must be the bluetooth... and the only bluetooth device I'm using is the apple wireless keyboard...

thanks for the input anyway 🙂

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Answer 3

May 29, 2010 7:09 PM in response to tryin012

I had the same problem and determined it was my bluetooth mouse/keyboard that was waking my iMac up at weird intervals. I temporarily disabled the bluetooth devices to wake my computer and used my USB mouse instead to wake it up.

Today I was able to get it functioning correctly again. I changed the service order in the Network preferences.

Go into System Prefs > Network. Next to the +/- icons on the left column there is a gear icon, click on it to select "Set Service Order..." I set "Bluetooth DUN" to last in the list, when it was first.

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Answer 4

tryin012 Author

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Jun 20, 2010 5:39 PM in response to tryin012

Thanks!

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