Ubuntu 16.04 LTS - Xenial Xerus
The 16.04.2 and newer point releases will ship with an updated kernel and X stack by default for the desktop. Server installations will default to the GA kernel and provide the enablement kernel as optional.
The 16.04 HWE Stacks will follow a new Rolling Update Model as documented at the following location:
It is highly recommended to read the above documentation before executing the following commands, as the HWE model has changed in 16.04.
Installing the HWE stack is simple:
sudo apt-get install --install-recommends linux-generic-hwe-16.04 xserver-xorg-hwe-16.04
sudo apt-get install --install-recommends linux-generic-hwe-16.04