Monday, 28 November 2016

16.04.2 - Rolling HWE Kernel

Hi All,

The Ubuntu 16.04.2 LTS point release for Xenial is set to release on Thurs Jan 19, 2017 according to the current Xenial release schedule:

As with previous point releases, we will deliver a newer Hardware Enablement Kernel with the point release.  This newer HWE Kernel will be derived from the 16.10 Yakkety kernel (ie v4.8 based).  There are some changes however that we wanted to make sure were communicated.  The biggest change is that we are moving to what we refer to as a "rolling HWE kernel" model.  Essentially, consumers of an HWE kernel will automatically be upgraded to the next HWE kernel offered in subsequent point releases until reaching the final HWE Kernel offered in 16.04.5.  This change is fully documented here:

An additional change is that 16.04.2 Server images will provide both the GA and the HWE kernel as options, with the GA kernel being the default option.  This is also documented in the wiki above.  Desktop images will continue to only offer the HWE kernel.

We have also provided an early preview of the v4.8 based Yakkety HWE kernel.  This can currently be found in the xenial-proposed pocket:

After enabling proposed, this kernel can be installed via the following command:

sudo apt-get install linux-generic-hwe-16.04-edge

Please do test and let us know your results.  Also, please file any bugs against the linux kernel package in Launchpad.