[Bug 1914278] [NEW] Kernel updates marked as "manually installed", prevents old kernels cleanup

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Erich Eickmeyer  (eeickmeyer):

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)

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: discover (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: packagekit (Ubuntu)
     Importance: Undecided
         Status: Confirmed

** Affects: unattended-upgrades (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: apt (Ubuntu Jammy)
     Importance: Undecided
         Status: Invalid

** Affects: discover (Ubuntu Jammy)
     Importance: Undecided
         Status: Invalid

** Affects: packagekit (Ubuntu Jammy)
     Importance: Undecided
         Status: Confirmed

** Affects: unattended-upgrades (Ubuntu Jammy)
     Importance: Undecided
         Status: Invalid


** Tags: amd64 apport-bug focal patch
-- 
Kernel updates marked as "manually installed", prevents old kernels cleanup
https://bugs.launchpad.net/bugs/1914278
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