kernel upgrade held back

[Tommy Trussell]

On Thu, Jul 9, 2015 at 9:23 AM, R Kimber <richardkimber at btinternet.com>
wrote:

> If I do:
>
> sudo apt-get update
> sudo apt-get upgrade
>
> I get:
>
> The following packages have been kept back:
>   linux-headers-generic linux-signed-generic linux-signed-image-generic
>
> What might be the reason for this?  As far as I know there are no broken
> packages.
>
> Also, the software updater progress window just closes when it tries to
> install these security upgrades.
>

What version of Ubuntu are you running? Do you have any custom (non Ubuntu)
repositories active?

One thing Ubuntu does is "roll out" updates piecemeal so not everyone in
the world is updating the same packages at the same time. This process gets
bypassed when you run the upgrade from the terminal. That might explain why
your software updater progress window just closes -- it may not "see" them
yet.

One other thing that can happen (and this is the most likely) is that you
have a package dependency that can only be satisfied by removing and/or
installing different packages. Once everything has settled, the Package
Updater will present a special dialog that shows what needs to be replaced
or installed, and will start the process once you approve and give your
password. You can attempt to do the same from the command line with these
two commands (the second one says it's OK to install or remove software as
part of the update):

sudo apt-get update
sudo apt-get dist-upgrade
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