Comment 9 for bug 814573

@mogliii --

I solved the problem for myself; the VirtualBox drivers seem to hang on suspend. So I created a file /etc/pm/sleep.d/00_vbox which is:

#!/bin/sh

export PATH=/bin:/sbin:/usr/bin:/usr/sbin
case "$1" in
    hibernate|suspend)
        service vboxdrv stop
    ;;
    thaw|resume)
        service vboxdrv start
    ;;
esac