Reverting the Xorg (Video) Intel Driver of Jaunty to 2.4 (of Intrepid)

We already posted 2 solutions to help you with the Intel graphics driver in Ubuntu Jaunty and those 2 workarounds helped a lot of people:

1. By whitelisting the Intel driver (Intel graphic drivers 965 (x3000 or x3100))
2. Experimental video drivers repository

But of course, those didn't work for everybody, so here is yet another way to try and make your Intel graphics card to work under Ubuntu Jaunty, by reverting to the xorg driver of Ubuntu Intrepid:

1. Go to System > Administration > Software Sources, on the second tab click "Add" and add the following lines:

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

Then, import the appropriate GPG key:

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

2. Install the old Intel driver:

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

3. Restart X by typing this in a terminal:

sudo /etc/init.d/gdm restart

and see if the graphics performance from Intrepid is restored.

If the above workaround does not work for you, then you can go back to the Ubuntu Jaunty xorg:

1. Go to System > Administration > Software Sources, on the second tab remove the 2 lines you added in step 1 from above.

2. Install the Xorg Intel Jaunty driver back:

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

3. After installing xserver-xorg-video-intel, restart the computer with:

sudo reboot

You can see people posting the results of this workaround, here. As you can see, it helped a lot of people but obviously not all.

Credits:
phyx for pointing the link
The Ubuntu Wiki