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Possible Duplicate:
Details window showing “unknown” driver for Graphics

When I open "details" at dash home, I check what graphic driver my computer is using but it says unknown. Is this a bug or anything else? What should I do? I'am using ubuntu 12.04

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marked as duplicate by Eliah Kagan, RolandiXor, Jorge Castro, RobotHumans, Jjed Sep 1 '12 at 21:24

This question was marked as an exact duplicate of an existing question.

Installing mesa utils should take care of that. In a terminal, run the following command:

sudo apt-get install mesa-utils
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It is not missing if you have anything other than a text only screen, it is a harmless to leave it like that, your system has found it but the "details" windows does not find it.
You can verify it by typing into a terminal:

lspci | less

the second entry will be your graphic card.

If you want to have it identified you can install mesa-utils with

sudo apt-get install mesa-utils

mesa-utils will also give you some diagnostic programs to check that your 3D render is working properly such as: glxdemo, glxgears, glxheads, glxinfo

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