How to disable automatic suspend warning

I'm using ubuntu 13.10 as htpc. To save some power, i have set it to suspend after 30minutes of inactivity. Before entering suspended state, a popup appears to warn me that computer is about to get put to sleep. This is a little annoyance since it appears when i resume the pc later.

How can i disable this notification for good?

One workaround posted on launchpad is a script that is based on the hooks of pm-utils:

sudo wget -O /etc/pm/sleep.d/20_kill-notify-osd https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1232454/+attachment/3942236/+files/20_kill-notify-osd
sudo chmod +x /etc/pm/sleep.d/20_kill-notify-osd

Another workaround might be the following method:

Download a script and make it executable:

wget -O ~/.suspendwarning.sh https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1232454/+attachment/3942095/+files/myscripts
chmod +x ~/.suspendwarning.sh

Add it to ~/.bashrc:

echo "if [ -f ~/.suspendwarning.sh ]; then
. ~/.suspendwarning.sh
fi" >> ~/.bashrc

After logging out and in the notifications should not pop up anymore after resume.