The first maintenance release for the 3.11 LTS has been released. All users of the 3.11 kernel series are urged to upgrade as soon as possible. Here’s how to do it in Ubuntu 13.10 Raring, Ubuntu 12.10 Quantal, Ubuntu 12.04 Precise and Linux Mint.

Except from a x86 fix and two sound enhancements, Linux kernel 3.11.1 introduces only updated drivers, including USB, hwmon, and iSCSI. See the official announement.

Install / Upgrade Kernel 3.11.1

The DEB packages are available in Kernel PPA. Press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below commands to download them:

for 32-bit system:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.1-saucy/linux-headers-3.11.1-031101-generic_3.11.1-031101.201309141102_i386.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.1-saucy/linux-headers-3.11.1-031101_3.11.1-031101.201309141102_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.1-saucy/linux-image-3.11.1-031101-generic_3.11.1-031101.201309141102_i386.deb

for 64-bit system:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.1-saucy/linux-headers-3.11.1-031101-generic_3.11.1-031101.201309141102_amd64.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.1-saucy/linux-headers-3.11.1-031101_3.11.1-031101.201309141102_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.1-saucy/linux-image-3.11.1-031101-generic_3.11.1-031101.201309141102_amd64.deb

Once downloaded, both 32-bit & 64-bit run below command to install them:

sudo dpkg -i linux-headers-3.11.1*.deb linux-image-3.11.1*.deb

(Optional) To remove this kernel, run below command:

sudo apt-get purge linux-image-3.11.1*

Kernel PPA: http://kernel.ubuntu.com/~kernel-ppa/mainline/