Comment 8 for bug 776736

I put the option you recommended, and it worked! Thanks, Brad!

Here are the steps I took to create an xorg.conf file (I did not have one) and then add the option to it.

1. Stop gdm:

        sudo service gdm stop

2. Log in at command prompt.

3. Enter the /etc/X11 directory:

        cd /etc/X11

4. Generate an xorg.conf.new file:

        sudo Xorg -configure

5. Rename xorg.conf.new to xorg.conf:

        sudo mv xorg.conf.new xorg.conf

6. Edit xorg.conf file, adding the following to the "Device" section:

        Option "Tiling" "False"