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Could someone help me to install drivers for AMD Radeon HD 7850 graphic card?

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marked as duplicate by Uri Herrera, Basharat Sialvi, Luis Alvarado Apr 19 '13 at 21:34

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.

You have to install driver that you can download here:

http://support.amd.com/us/gpudownload/Pages/index.aspx

To install driver First remove old stuff by:

sudo apt-get remove --purge fglrx*
sudo apt-get remove --purge xserver-xorg-video-ati xserver-xorg-video-radeon
sudo dpkg-reconfigure xserver-xorg

then install your new driver:

sudo chmod 755 ./amd-driver-installer-12-4-x86.x86_64.run
sudo ./amd-driver-installer-12-4-x86.x86_64.run

***VERY IMPORTANT: if/when it gives you the number options like [1] DO NOT HIT ENTER, you must actually enter the number 1 then enter.

sudo aticonfig --initial

There is also a good idea to install "Catalyst Control Center" that you'll find in Package Manager

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