NVIDIA Optimus and Ubuntu 12.10

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http://askubuntu.com – I'm new to linux environment. I have NVIDIA GEForce GT 520M which is Optimus card. I installed ubuntu 12.10 and on the top of that I installed NVIDIA's new driver 304.60 but something went wrong and display manager is totally screwed nothing is displaying properly. All fonts are big and i'm able to access only nautilus as everything went out of the screen. I tried removing it and rollback it to nouveau but it is happening in any case. I want better power management and I want to use my card for CUDA programming so I was installing driver before installing bumblebee. Can anyone please tell me (HowTos)