16.04.2 - Rolling HWE Kernel

Leann Ogasawara leann.ogasawara at canonical.com
Wed Nov 30 13:41:27 UTC 2016

On Wed, Nov 30, 2016 at 2:56 AM, Art LaForge <art.laforge8 at gmail.com> wrote:

> Hi leann: I am not a power user. Just hate Microsoft so I  do my best to
> keep current with LTS releases of Ubuntu. I did an upgrade right after
> receiving your email. I don't know what happened but my system will not
> boot now. Stops at the motherboard display, when I check my bios settings I
> see the hard drives are not detected nor can I boot from the cd?? Would
> appreciate any suggestions.
> Art LaForge
Hi Art,

Thanks for the email.  For tracking purposes, could we have you first file
a bug in Launchpad:


When filling in the bug description, please include the information you
have described above, but could you also elaborate on the details of your
upgrade?  Did you indeed specifically install the linux-hwe-edge kernel
from xenial-proposed?  Or did you only pull in available updates for Xenial
(which would not have given you the linux-hwe-edge kernel)?  Or did you
fully upgrade to the 16.10 Yakkety release?  Also in the bug report, could
you tell us which platform/hardware you are seeing this on?

Please email us back with the bug number once you have everything filed.


> On Nov 28, 2016 6:21 PM, "Leann Ogasawara" <leann.ogasawara at canonical.com>
> wrote:
>> 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:
>> https://wiki.ubuntu.com/XenialXerus/ReleaseSchedule
>> 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:
>> https://wiki.ubuntu.com/Kernel/RollingLTSEnablementStack
>> 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:
>> https://launchpad.net/ubuntu/+source/linux-hwe-edge
>> 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.
>> Thanks,
>> Leann
>> --
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