Fixing video corruption on resume under Ubuntu Linux

Create a file called /etc/pm/sleep.d/15_chvt and paste the below into it:

#!/bin/sh

# Action script to change VT to fix occasional video corruption on resume
#
# Copyright: Copyright (c) 2012
# License:   GPL-2
#

PATH=/sbin:/usr/sbin:/bin:/usr/bin

case "${1}" in
        resume|thaw)
                vt=$(/bin/fgconsole)
                if [ -z $vt ]; then
                  vt=7
                fi
  chvt $(expr $vt + 1)
  chvt $vt
                ;;
esac