I determine if direct rendering is enabled or not by running the command:
glxinfo | grep direct
direct rendering: Yes or No
Yes GDM is running on boot, but once I run the command:
sudo /etc/init.d/gdm restart
It brings me to a black screen (so maybe it isn't running?). So I press ctrl-alt-f1, login via command prompt, then type startx.
I will see if it is actually restarted when I run the above command.
Any ideas? Thanks!