Graphics Driver is 'Unknown' in 'Details' on Ubuntu
December 29, 2012
After installing Ubuntu, you might discover that your graphics card driver is undetected. In Detailsmenu under Settings, you can see your graphics driver is Unknown. You can easily repair this. Means, you can see the name of your graphics driver here. It'll be detected. Just run the following command in Terminal and your problem will be solved.
sudo apt-get install mesa-utils