Go into your terminal and type in: powersave -u. That's it!! It is also technically supposed to be able to put your computer in hibernate by typing in powersave -U, but it simply doesn't work on my computer for some reason.
If you are having similar problems as I am and want to install this program, either go to Synaptic Package Manager and look for and install powersaved, or go to your terminal and type in sudo apt-get install powersaved. You can make it even easier on yourself by creating a shell script containing the powersave command with the suspend argument. Simply navigate in Nautilus to the directory where you want to create your shell script, right click on the background of that directory's window, click on Create Document > Empty File, and then add the following into the empty document:
When you're done, save it with a filename such as suspend.sh, and then create a launcher that activates your script. I right-clicked on my upper Gnome-Panel and clicked on Add To Panel... > Custom Application Launcher, entered in "Suspend" in the name field, sh /home/inkhorn/Scripts/suspend.sh in the command field, and chose a custom icon to represent the launcher on my panel.
Now all I have to do is click on my newly created launcher button on my Gnome-Panel and my computer goes into Suspend mode like it should! You of course don't need to go through the trouble to make a button for this on your Gnome-Panel like I have, but it certainly saves typing in the long run.