[Bug 1914278] Re: apt autoremove is not removing unused kernels

[Erich Eickmeyer ]

Balint:

Here's the result:
https://paste.ubuntu.com/p/9kbT6HDpjw/

Bear in mind, I have a few external repositories, and we also ship a
bunch of external repositories by default. That said, none of those
should affect this as they don't contain kernels, nor do we pin any
kernels.

If you'd like, I'll ask the company president to give me the output of
the same command.

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https://bugs.launchpad.net/bugs/1914278

Title:
  apt autoremove is not removing unused kernels

Status in apt package in Ubuntu:
  New
Status in discover package in Ubuntu:
  New
Status in packagekit package in Ubuntu:
  New
Status in unattended-upgrades package in Ubuntu:
  Incomplete

Bug description:
  With the machines I help administer, we have been finding situations
  where the /boot directory is filling-up beyond 3 kernels on LUKS
  encrypted systems. apt autoremove is not removing old kernels as
  expected.

  This may also be an issue with unattended-upgrades since I found the
  following line commented-out by default:

  // Remove unused automatically installed kernel-related packages
  // (kernel images, kernel headers and kernel version locked tools).
  // Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";

  We have had a system with as many as 15 kernel packages installed as a
  result of this not working as expected.

  The majority of these machines are using Discover to do their package
  upgrading, which uses PackageKit as its backend.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: apt 2.0.4
  ProcVersionSignature: Ubuntu 5.8.0-41.46~20.04.1-generic 5.8.18
  Uname: Linux 5.8.0-41-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: KDE
  Date: Tue Feb  2 09:29:01 2021
  InstallationDate: Installed on 2020-11-07 (87 days ago)
  InstallationMedia: Kubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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