Hello Linux Geeksters.
In this short guide I will show you how to fix the slow graphics performance, after upgrading to Ubuntu 13.04 Raring Ringtail, and using Intel GPU.
To fix the graphics problem, do this two things:
1. Create the /etc/X11/xorg.conf file:
$ sudo touch /etc/X11/xorg.conf
2. Open the newly created file in a text editor, with sudo privileges:
$ gksudo gedit /etc/X11/xorg.conf
3. Paste this:
Option "AccelMethod" "uxa"
#Option "AccelMethod" "sna"
This is it. Enjoy.