Comment 126 for bug 345119

This worked for me:

Add to your /etc/apt/sources.list:

deb http://ppa.launchpad.net/siretart/ppa/ubuntu jaunty main

Now the key: sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xce90d8983e731f79

sudo apt-get update
sudo apt-get install xserver-xorg-video-intel-2.4

Now I'm running karmic with a lot of jaunty drivers, specially intel graphics 2.4 and now everything goes right (¨)

from here: https://wiki.ubuntu.com/ReinhardTartler/X/RevertingIntelDriverTo2.4