[Bug 1787460] Re: Unattended upgrades removed linux-image-generic

[Adam Conrad]

So, this might partially be a linux-meta/overrides bug.  The top-level
metas (linux-$flavour) should be in the metapackages section so that if
they're removed (for instance, by someone who doesn't want headers, but
kinda likes kernels), the manually installed bit is transferred down one
level to linux-image-$flavour and linux-headers-$flavour.

It might also be valid to say that the neverautoremove apt/kernel magic
could/should include the mid-level metas in the list, so they're just
considered manual regardless of what state they were accidentally put
in.

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Title:
  Unattended upgrades removed linux-image-generic

Status in unattended-upgrades package in Ubuntu:
  New

Bug description:
  On a fairly fresh install of 18.04 with no modifications whatsoever to
  the unattended-upgrades configuration, it decided to remove linux-
  image-generic which also removed linux-modules-extra which caused
  sound drivers to disappear, etc.

  The relative snippet from /var/log/unattended-upgrades/unattended-
  upgrades.log is:

  2018-08-15 06:18:00,048 INFO Starting unattended upgrades script
  2018-08-15 06:18:00,048 INFO Allowed origins are: o=Ubuntu,a=bionic, o=Ubuntu,a=bionic-security, o=UbuntuESM,a=bionic
  2018-08-15 06:18:01,552 INFO Removing unused kernel packages: linux-headers-generic linux-image-generic linux-headers-4.15.0-32-generic linux-headers-4.15.0-32
  2018-08-15 06:18:01,588 WARNING Keeping auto-removable linux-headers-generic package(s) because it would also remove the following packages which should be kept in this step: libxml2 linux-image-4.15.0-32-generic linux-modules-4.15.0-32-generic linux-modules-extra-4.15.0-32-generic
  2018-08-15 06:18:09,476 INFO Packages that were successfully auto-removed: linux-headers-4.15.0-32 linux-headers-4.15.0-32-generic linux-headers-generic linux-image-generic
  2018-08-15 06:18:09,477 INFO Packages that are kept back: linux-headers-generic
  2018-08-15 06:18:10,300 INFO Packages that will be upgraded: libxml2 linux-image-generic
  2018-08-15 06:18:10,300 INFO Writing dpkg log to /var/log/unattended-upgrades/unattended-upgrades-dpkg.log
  2018-08-15 06:18:39,238 INFO All upgrades installed
  2018-08-15 06:18:42,818 INFO Packages that were successfully auto-removed: linux-image-generic linux-modules-extra-4.15.0-32-generic
  2018-08-15 06:18:42,818 INFO Packages that are kept back:

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: unattended-upgrades 1.1ubuntu1.18.04.5
  ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
  Uname: Linux 4.15.0-32-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.3
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Aug 16 13:17:30 2018
  InstallationDate: Installed on 2018-07-24 (23 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180724)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: unattended-upgrades
  UpgradeStatus: No upgrade log present (probably fresh install)

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