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Today I ran

sudo apt-get dist-upgrade

Nothing strange there, however, I noticed this line

Setting up linux-image-generic-lts-utopic (3.16.0.51.42) ...

The problem here is that I am not running utopic I am running Trusty.

So, why was a kernel labelled utopic updated on a trusty system ? can anyone please explain ? There are no other references to this in my terminal output, just the one line and I did not install it (fresh install one week ago).

Mark Kirby
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2 Answers2

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You are not running utopic, but LTS Ubuntu versions have an option to install kernels from the newer releases.

linux-image-generic-lts-utopic is a meta package that pulls 3.16 major kernel versions.

In Ubuntu 14.04.2 the utopic kernel comes by default.

You can read about HWE Stack

So everything is OK with your system. If you remove linux-image-generic-lts-utopic package, your kernel 3.16 will not get upgrades.

You can also install 3.19 kernel by running:

sudo apt-get install linux-generic-lts-vivid

And soon the 4.2 wily kernel will appear as an option for Ubuntu 14.04.

Pilot6
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If you take a look at output of apt-get show linux-image-generic-lts-trusty and linux-image-generic-lts-vivid you can see something curious:

xieerqi@eagle:~$ apt-cache show linux-image-generic-lts-vivid | grep -i version
Version: 3.19.0.31.18
Version: 3.19.0.30.17

xieerqi@eagle:~$ apt-cache show linux-image-generic-lts-trusty | grep -i version 
Version: 3.13.0.66.72
Version: 3.13.0.24.28

In addition, note what release notes say:

By default, the 14.04.3 point release will ship with a newer 3.19 Linux kernel from Ubuntu 15.04, and a matching X.org stack

So when you upgraded, the system chose by version, which one is the latest available lts kernel.

Sergiy Kolodyazhnyy
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