get linux kernel source ubuntu

From ubuntuguide.org:

sudo apt-get install nvidia-glx

sudo apt-get install nvidia-settings

sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf_backup

sudo nvidia-glx-config enable

sudo gedit /usr/share/applications/NVIDIA-Settings.desktop

Insert the following lines into the new file

[Desktop Entry]

Name=NVIDIA Settings

Comment=NVIDIA Settings

Exec=nvidia-settings

Icon=

Terminal=false

Type=Application

Categories=Application;System;

Read ubuntuguide.org in it's entirety for more info.

get linux kernel source

apt-cache search kernel-source

and then install that package

also after u chage ur sources.list, u need to run this

apt-get update