It's 2 year I've started using ubuntu. In ubutnu 10.04 until ubuntu 11.10 anything was Ok with my Graphic card, But when I migrate to ubuntu 12.04 I had a corruption in my graphic card and I paid expert to repair it. It was Ok with ubuntu 12.04 in continuous but when I upgraded to ubuntu 12.10 I'm never able to install my nvidia.
I'm new to ubuntu and i've been having this question since the day i installed Ubuntu. Does ubuntu come along with the necessary drivers for my Nvidia 640M graphic card? Also , My computer was overheating a few months back and i found out that the problem was with the Nvidia Optimus thing so i had to use Bumblebee and disable the graphic card.