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I have a Thinkpad T400 with a ATI Mobility Radeon HD 3470. It appears that the basic installation of my Ubuntu does not "fully use" the ATI graphics card. From what I have read, the fglrx driver does support my graphics card but only on the last LTS (Ubuntu 12.04).

Can anyone give me instructions on how to install a graphics card driver, such that I can get the maximum performance out of my laptop?

closed as unclear what you're asking by Braiam, Stephen Kitt, Anthon, michas, Michael Homer Jul 11 '15 at 22:12

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    "It appears that the basic installation of my Ubuntu does not "fully use" the ATI graphics card" what makes you think that? – Braiam Jul 11 '15 at 12:22
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The proprietary fglrx driver no longer supports your HD 3470, but the free software radeon driver supports it very well. You should be able to run any 3D software your card is physically capable of running with the radeon driver.

To use the radeon driver, make sure all fglrx packages are uninstalled, and install xserver-xorg-video-radeon and libgl1-mesa-glx.

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