Maneira do Tarball da fonte
sudo apt-get install linux-source
mkdir ~/src
cd ~/src
tar xjvf /usr/src/linux-source-<version-number-here>.tar.bz2
cd linux-source-<version-number-here>
Caminho do clone do Git
sudo apt-get install git-core
mkdir ~/src/linux
cd ~/src/linux
git clone git://kernel.ubuntu.com/ubuntu/ubuntu-maverick.git