Ubuntu 12.04 - problem with nvidia drivers

I am not sure but think so Ubuntu not providing Nvidia latest driver version directly. You need to get help from Nvidia.

I think you need latest driver version, remove 331 that already installed, you can get Nvidia various driver version. Latest released on July 10, 2014.

Click here.

You will need bumblebee to enable the nvidia gpu.

For 12.04

sudo apt-get remove --purge nvidia-*

sudo rm /etc/X11/xorg.conf

sudo apt-get update && sudo apt-get upgrade

sudo apt-get install ubuntu-desktop linux-headers-generic-lts-raring

sudo add-apt-repository ppa:bumblebee/stable

sudo apt-get update && sudo apt-get install bumblebee bumblebee-nvidia primus linux-headers-generic

reboot

check these settings against your installed driver and adjust as necessary

sudo nano /etc/bumblebee/bumblebee.conf

*If you update the driver you will have to edit this file and adjust the settings.

Driver=nvidia

KernelDriver=nvidia-331-updates

LibraryPath=/usr/lib/nvidia-331-updates:/usr/lib32/nvidia-331-updates

XorgModulePath=/usr/lib/nvidia-331-updates/xorg,/usr/lib/xorg/modules

Usage [command] [option] [program]

optirun -b primus glxspheres

Or

primusrun glxgears

primusrun firefox

primusrun wine gta-vc.exe

primusrun steam

primusrun nvidia-settings