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I have DELL Inspiron n4050 i5 4GB RAM laptop and I recently installed Ubuntu 14.04 on it. I need to install graphic drivers on it and don't know how.

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It should be using the Intel drivers by default. Are you having issues? – Nattgew Apr 25 '14 at 15:54
when i installed cairo doc and compiz, animation and effects doesn't work at all. i thought that it is because of Intel drivers. Any idea ?? – sameermw Apr 26 '14 at 15:55
@Nattgew then why someone install intel Linux graphic drivers like this i really don't have any idea. thanks – sameermw May 25 '14 at 10:42

Type this command in the terminal:

sudo apt-get install mesa-utils
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I tried sudo apt-get install mesa-utils and i used cairo-dock -o but it didn't work at all.Today there are new updates for cario-dock and after updating cairo-dock somehow now it works. anyway thanks @Marco and @Nattgew. – sameermw May 12 '14 at 6:28
I'm also having the same issue for Intel H61 motherboard... Mine's still detected as "Unknowen Display" and stuck for resolution 1024x768 and 800x600.... cairo-dock did not work... My Monitor is BENQ W1508... – Sidhi Ciang Dec 22 '14 at 16:14

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