Linux Kernel 3.11.8 has been released today. All users of the 3.11 kernel series are urged to upgrade as soon as possible. Here’s how to download & install the kernel packages in Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.04, Linux Mint, Debian and their derivatives.

Linux kernel 3.11.8 includes a few arch improvements, lots of updated drivers, including i915, Radeon, HID, Wireless, SCSI and USB, fixes to the CIFS and eCryptfs filesystems, as well as improved sound and networking. See official announcement

Install / Upgrade Kernel 3.11.8:

Press Ctrl+Alt+T on keyboard to open terminal. When it opens, run commands below one by one to download the Kernel DEBs:

For 32 bit system:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.8-saucy/linux-headers-3.11.8-031108-generic_3.11.8-031108.201311122252_i386.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.8-saucy/linux-headers-3.11.8-031108_3.11.8-031108.201311122252_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.8-saucy/linux-image-3.11.8-031108-generic_3.11.8-031108.201311122252_i386.deb

For 64 bit system:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.8-saucy/linux-headers-3.11.8-031108-generic_3.11.8-031108.201311122252_amd64.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.8-saucy/linux-headers-3.11.8-031108_3.11.8-031108.201311122252_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.8-saucy/linux-image-3.11.8-031108-generic_3.11.8-031108.201311122252_amd64.deb

After that, use command below to install them and reboot your machine once done.

sudo dpkg -i linux-headers-3.11.8-*.deb linux-image-3.11.8-*.deb

If for some reason the new kernel does not work properly, boot the previous kernel from Grub boot-loader and remove Linux Kernel 3.11.8 via:

sudo apt-get purge linux-headers-3.11.8-* linux-image-3.11.8-*

If you’re not familiar with command line, download & install the DEBs from Ubuntu Kernal page.