The issues with virtualbox and hwe can be tracked in bug 1866518 or bug

** No longer affects: linux-meta (Ubuntu)

** No longer affects: linux-meta (Ubuntu Trusty)

** No longer affects: linux-meta (Ubuntu Xenial)

** No longer affects: linux-meta (Ubuntu Bionic)

** No longer affects: linux-meta (Ubuntu Cosmic)

** No longer affects: linux-meta (Ubuntu Disco)

** No longer affects: linux-meta-hwe (Ubuntu)

** No longer affects: linux-meta-hwe (Ubuntu Trusty)

** No longer affects: linux-meta-hwe (Ubuntu Xenial)

** No longer affects: linux-meta-hwe (Ubuntu Bionic)

** No longer affects: linux-meta-hwe (Ubuntu Cosmic)

** No longer affects: linux-meta-hwe (Ubuntu Disco)

You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to apt in Ubuntu.

  Unattended upgrades removed linux-image-generic

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Trusty:
  Fix Released
Status in apt source package in Xenial:
  Fix Released
Status in apt source package in Bionic:
  Fix Released
Status in apt source package in Cosmic:
  Fix Released
Status in apt source package in Disco:
  Fix Released

Bug description:
  If a user accidentally removed linux-generic, unattended-upgrades will also 
autoremove linux-image-generic, leaving them without kernel upgrades.

  [Test Case]
  1. Remove all reverse dependencies of linux-image-generic
  2. Mark linux-image-generic as automatically installed
  3. Run unattended-upgrades -v --dry-run --debug to ensure that 
linux-image-generic is not removed (after verifying that it is, with old apt)

  [Regression potential]
  This adds two regular expressions to the list of packages that must not be 
automatically removed. As such, the only possible regression is that some 
packages starting with linux-image, not containing any dots, are not removed

  [Original bug report]
  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, 

  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 
  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 
  2018-08-15 06:18:09,477 INFO Packages that are kept back: 
  2018-08-15 06:18:10,300 INFO Packages that will be upgraded: libxml2 
  2018-08-15 06:18:10,300 INFO Writing dpkg log to 
  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 
  PackageArchitecture: all
   PATH=(custom, no user)
  SourcePackage: unattended-upgrades
  UpgradeStatus: No upgrade log present (probably fresh install)

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