Comment 3 for bug 1175637

On 3 May 2013 20:24, Steve J. <email address hidden> wrote:
> On Fri, May 03, 2013 at 01:09:09AM -0000, Daniel Hartwig wrote:
>> > This is a problem, because it renders the fix in this bug,
>> > https://bugs.launchpad.net/ubuntu/+source/apt/+bug/923876 (Limit and
>> > clean-up kernel images and headers automatically in LTS) ineffective,
>> > since apt-get autoremove will not remove packages which are marked as
>> > manually installed.
>> >
>>
>> When the kernel image is upgraded again, 3.2.0-41 will be marked auto.
>> The kernel cleanup hack works by putting the active kernel image
>> outside of APTs autoremove system, i.e. to mark it manually installed.
>
> I see, but that's not the behavior that I'm seeing (the host I picked to
> use as an example wasn't a very good one, sorry). I'm seeing all the
> kernel packages remaining marked manual, and they're never being marked
> as auto after new updates.
>

Yes that is my mistake, the cleanup does not change the marking at
all. If they are currently manual you will have to mark them
auto-installed to have the cleanup work. If upgrading
'linux-image-generic' leaves you with a linux-image that is marked
manual, that is of course a problem.

How do you upgrade the systems, in your original message you mention
aptitude and unattended-upgrades?

> This bug looks similar to
> https://bugs.launchpad.net/aptdaemon/+bug/1078544, however, I'm running
> a version of aptdaemon that supposedly has this fix applied.

That issue does not apply here as the kernel upgrades you identified
usually come as new packages. It would apply if e.g. after an upgrade
you found that 'linux-image-generic' had changed from auto-installed
to manual.