wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18.1-vivid/linux-image-3.18.1-031801-generic_3.18.1-031801.201412170637_amd64.deb
 sudo dpkg -i linux-image-3.18.1-031801-generic_3.18.1-031801.201412170637_amd64.deb