2009 Mac Pro randomly waking up from sleep

Discussion in 'Mac Pro' started by rolandlim, Jul 21, 2009.

  1. rolandlim macrumors newbie

    Jul 21, 2009
    I have a 2009 8 cores 2.66Ghz Mac Pro with 16GB RAM and ATI Radeon HD 4870. It keeps waking up randomly from sleep. I have tried quitting all applications before sleeping, but it still woke up from sleep by itself. Anyone has nay idea why it kept waking up randomly?
  2. Dreamail macrumors 6502

    Jun 17, 2003

    Check your USB devices.

    Could it be that you're plugging/unplugging a new device? Perhaps a loose connection or faulty cable that 'simulates' plugging/unplugging?
    If you have a USB mouse or keyboard and disconnect it, the Mac Pro will wake from sleep as it tries to mount/unmount the USB device.

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