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Possible Duplicate:
How can I get my graphics card to be recognized in System Info?

I am using Nvidia 9500GT Graphics Card and so I use Nvidia Proprietory Driver as my Driver enter image description here

But in the System Detail it shows Graphics Unknown why? enter image description here

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marked as duplicate by Anwar Shah, Jorge Castro, Eliah Kagan, Mitch, stephenmyall Oct 3 '12 at 8:14

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 1 down vote accepted
sudo apt-get install mesa-utils

Install it & it will show you

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