On ubuntu 10.04 i used this solution. But aparently the xhci module is now called xhci_hcd . So i needed to chage “/etc/pm/sleep.d/05_disable_usb3″ to

#!/bin/bash

## Unload USB 3 module before sleep

case "$1" in
    suspend)
        /sbin/modprobe -r xhci_hcd
        ;;
    hibernate)
        /sbin/modprobe -r xhci_hcd
        ;;
    thaw)
        /sbin/modprobe xhci_hcd
        ;;
    resume)
        /sbin/modprobe xhci_hcd
        ;;
esac