[Bug 1357093] Re: Kernels not autoremoving, causing out of space error on LVM or Encrypted installation or on any installation, when /boot partition gets full

[Jarno Suni]

Ian Weisser, I think in 16.04, in contrary to what you claim, packages are not autoremoved before doing anything else. https://github.com/mvo5/unattended-upgrades tells:
"Unattended-Upgrade::Remove-New-Unused-Dependencies - boolean (default:True)

Remove any new unused dependencies after the upgrade finished."

Anyway, in my 16.04 system, where I have the setting enabled (as
default) and unattended-upgrades enabled (via Software & Updates), I
currently have 6 kernels installed, so I think it is not doing its job
well.

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https://bugs.launchpad.net/bugs/1357093

Title:
  Kernels not autoremoving, causing out of space error on LVM or
  Encrypted installation or on any installation, when /boot partition
  gets full

Status in unattended-upgrades package in Ubuntu:
  Fix Released

Bug description:
  Currently if one chooses to use LVM or encrypted install, a /boot
  partition is created of 236Mb

  Once kernel updates start being released this partition soon fills
  until people are left unable to upgrade.

  While you and I might know that we need to watch partition space, many
  of the people we have installing think that a windows disk is a disk
  and not a partition, education is probably the key - but in the
  meantime support venues keep needing to deal with the fact the
  partition is too small and/or old kernels are not purged as new ones
  install.

  For workaround and sytem repair, see
  https://help.ubuntu.com/community/Lubuntu/Documentation/RemoveOldKernels

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