How to Fix Screen mess after upgrade to Ubuntu 9.10(Karmic)

If you have upgraded your ubuntu from 9.04 to 9.10,and the display of screen was messed.You can try following to uninstall the graphics card driver to fix this error.

First,restart the computer and select boot up from ubuntu recovery mode(by default the second one) in menu list.Select root in next options and you will get into command line.
Install envyng by using this :

apt-get update
apt-get install envyng-core

Then run envyng:

envyng -t

now you can select to uninstall the graphics card driver that you have installed in ubuntu 9.04.
Restart,and you should be done.

Related posts:

1. Install Nvidia/ATI graphics card driver in Ubuntu 9.10(Karmic)
2. EnvyNG-A Tool to easily install Nvidia/Ati video driver on Ubuntu
3. How to install Windows wireless network card driver in Ubuntu
4. Install Nvidia graphical driver in Ubuntu Lucid (10.04)
5. Upgrade ubuntu 9.04(Jaunty) to ubuntu 9.10(Karmic) using update manager