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I can't find any additional driver listed in my ubuntu 12.10. I've checked the following command and it shows like i've got NVIDIA card for sure. I've got NVIDIA GEFORCE GT520M.
lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation Device 0ded (rev ff)
So can you please help me to get my NVIDIA driver to work out? I'm quite confused that everybody can see additional driver for their NVIDIA cards. Is it only me who can't see the additional drivers for NVIDIA Card? Please help me. And I can't post my screenshots as i've not enough reputations. :(