[Bug 1355026] Re: small /boot (as created for full-disk encryption) confuses update-manager

[Phill]

I think this bug should be considered of high importance as it is a
security risk because security updates can not be installed.

It happened to me on a clean install with default full-disk-encryption
partitioning within about 2 months of use with a 1TB disk; so I'm
guessing the 3 people showing as affected by this bug is the tip of the
iceberg - or maybe most people using full-disk-encryption avoid using
the standard software updater.

Running `apt-get autoremove --purge` doesn't appear to free up enough
disk space for software-updater to work either. Thanks for the tip using
`apt-get dist-upgrade`, that worked OK for me too.

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https://bugs.launchpad.net/bugs/1355026

Title:
  small /boot (as created for full-disk encryption) confuses update-
  manager

Status in update-manager package in Ubuntu:
  Confirmed

Bug description:
  Every time a kernel update comes in, the update-manager scolds me for
  not having enough disk free on /boot.  I try to autoremove everything
  I can, but in the end `sudo apt-get dist-upgrade` does the upgrade
  with no problems.

  Separately from why the installer gave me such a teensy /boot (doesn't
  seem future-proof given the trends for kernel sizes), why can't
  update-manager work out the upgrade?

  Not to be confused with bug 1389620, where autoremove would leave
  enough space but Software Updater doesn't suggest it.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: update-manager 1:0.196.12
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Aptdaemon:

  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Aug 11 07:46:24 2014
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'356'
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'window-width' b'444'
   b'com.ubuntu.update-manager' b'launch-time' b'1407653443'
  InstallationDate: Installed on 2014-05-29 (73 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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