Sleep = Hibernation and USB becomes unresponsive

Discussion in 'iMac' started by teacherh, Jan 23, 2009.

  1. teacherh macrumors newbie

    Jan 23, 2009
    Hi All,

    I have an iMac (20" 2.4 g, 3 gig ram, os 10.5.6) that has recently stopped waking up after a long night of sleep. I have also found that the mouse and keyboard become unresponsive if the mac does wake up. The mouse has power, but the keyboard does not show any sign of life. The mouse glows red, but when I hit caps-lock, the little green light doesn't come on. I have tried switching ports, but no dice. As I said, the USB port clearly is sending power to the mouse, but not accepting any input. When I restart, all is well on most occassions, but the problem has persisted, once or twice, after a re-boot.

    Anyone else experience this and/or know how to fix this?


  2. ewilson6 macrumors 6502

    Nov 30, 2006
    just reset your PRAM.

    restart your mac and hold p-r-apple-option,let your mac chime 3-4 times before releasing.

    Whenever your mac goes into sleep mode your usb ports are powered down also.


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