[Bug 1605160] Re: kernel autoremove not working

[thermoman]

I see

> NonfreeKernelModules: zfs zunicode zcommon znvpair zavl

in your report. It might have something to do with packages that install
extra kernel modules ultimately preventing autoremoval of the old kernel
images. ZFS in your case, virtualbox in my case.

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Title:
  kernel autoremove not working

Status in apt package in Ubuntu:
  Confirmed

Bug description:
  On one 16.04 machine I have 5 4.4.0-kernels in /boot now (on another
  machine even 6):

  -rw------- 1 root root  7013968 Apr 19 00:21 vmlinuz-4.4.0-21-generic
  -rw------- 1 root root  7015440 Mai 13 01:55 vmlinuz-4.4.0-22-generic
  -rw------- 1 root root  7020176 Jun  8 23:39 vmlinuz-4.4.0-24-generic
  -rw------- 1 root root  7026864 Jun 24 14:03 vmlinuz-4.4.0-28-generic
  -rw------- 1 root root  7047504 Jul 13 03:59 vmlinuz-4.4.0-31-generic

  
  Should not hapen that way. apt-get autoremove should clean that, but doesn't. 

  regards

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: apt 1.2.12~ubuntu16.04.1
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  Uname: Linux 4.4.0-31-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Jul 21 11:41:43 2016
  InstallationDate: Installed on 2016-04-22 (89 days ago)
  InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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