Comment 32 for bug 1291969

Adding the following to `/etc/pm/sleep.d/20_custom-xhci_hcd` worked for me:

```
#!/bin/sh
# File: "/etc/pm/sleep.d/20_custom-xhci_hcd".

case "${1}" in
  hibernate|suspend)
    # Unbind xhci_hcd devices
    echo -n "0000:00:14.0" | tee /sys/bus/pci/drivers/xhci_hcd/unbind
  ;;
  resume|thaw)
    # Bind xhci_hcd devices
    echo -n "0000:00:14.0" | tee /sys/bus/pci/drivers/xhci_hcd/bind
  ;;
esac
```