Ask ideapadY500 install ubuntu graphics driver problem

I downloaded the corresponding nvidia graphics driver . Run file and needs to close x Window to install , I ctrl + alt +1 then , sudo / etc / init.d / gdm stop after , and then run . Run file , and then accept agreement , after a few tips nouveau stuff was in the running installation fails , saying that what documents you can create one , whether you want to install the program to help generate , the point is that the result was failure , but also into a ubuntu discovery Cup with a resolution of only 1280 * 768 and 800 * 600 , no widescreen the
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so long, it seems no way
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try to uninstall reinstall , or re-download a try to do without graphics driver to prepare ah.
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with seeking this I was y480n
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that no one can solve , do not seek a