The Linux Kernel 3.11 series has reached 3.11.4, which brings lots of drivers updates or fixes include Radeon, Intel i915, Wireless and USB. The ARM platform gets a fix for the Thumb-2 bug in the AES assembler code, and two bugs were squashed for the x86 architecture. Read the official announcement
All users of Kernel 3.11 series are urged to upgrade as soon as possible. Here’s how to install or upgrade Linux Kernel 3.11.4 in Ubuntu 13.10 Saucy, Ubuntu 13.04 Raring, Ubuntu 12.04 Precise, Ubuntu 12.10 Quantal and their derivatives.
To get started, press Ctrl+ALt+T on your keyboard to open terminal. When it opens, run command to download the DEBs:
For 32-bit system:
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.4-saucy/linux-headers-3.11.4-031104-generic_3.11.4-031104.201310081221_i386.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.4-saucy/linux-headers-3.11.4-031104_3.11.4-031104.201310081221_all.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.4-saucy/linux-image-3.11.4-031104-generic_3.11.4-031104.201310081221_i386.deb
For 64-bit system:
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.4-saucy/linux-headers-3.11.4-031104-generic_3.11.4-031104.201310081221_amd64.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.4-saucy/linux-headers-3.11.4-031104_3.11.4-031104.201310081221_all.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11.4-saucy/linux-image-3.11.4-031104-generic_3.11.4-031104.201310081221_amd64.deb
Both 32-bit & 64-bit install the Debs via:
sudo dpkg -i linux-headers-3.11.4*.deb linux-image-3.11.4*.deb
Once done, restart your computer.
(Optional) To remove Linux Kernel 3.11.4 and revert back to the previous, run command:
sudo apt-get purge linux-image-3.11.4-*