package linux-image-4.15.0-20-generic 4.15.0-20.21 failed to install/upgrade: installed linux-image-4.15.0-20-generic package post-removal script subprocess returned error exit status 21

[Jan Rudolph]

Happened after upgrading to 18.04 from 16.04. Ubuntu fails to boot with kernel 4.15 as well.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-20-generic 4.15.0-20.21
ProcVersionSignature: Ubuntu 4.13.0-39.44-generic 4.13.16
Uname: Linux 4.13.0-39-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
AptOrdering:
 linux-image-4.15.0-20-generic:amd64: Remove
 NULL: ConfigurePending
Architecture: amd64
Date: Tue May 29 16:12:20 2018
DpkgTerminalLog:
 Removing linux-image-4.15.0-20-generic (4.15.0-20.21) ...
 Failed to create or replace /vmlinuz.old: Is a directory at /usr/bin/linux-update-symlinks line 72.
 dpkg: error processing package linux-image-4.15.0-20-generic (--remove):
  installed linux-image-4.15.0-20-generic package post-removal script subprocess returned error exit status 21
DuplicateSignature:
 package:linux-image-4.15.0-20-generic:4.15.0-20.21
 Removing linux-image-4.15.0-20-generic (4.15.0-20.21) ...
 Failed to create or replace /vmlinuz.old: Is a directory at /usr/bin/linux-update-symlinks line 72.
 dpkg: error processing package linux-image-4.15.0-20-generic (--remove):
  installed linux-image-4.15.0-20-generic package post-removal script subprocess returned error exit status 21
ErrorMessage: installed linux-image-4.15.0-20-generic package post-removal script subprocess returned error exit status 21
InstallationDate: Installed on 2016-05-10 (748 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SourcePackage: linux-signed
Title: package linux-image-4.15.0-20-generic 4.15.0-20.21 failed to install/upgrade: installed linux-image-4.15.0-20-generic package post-removal script subprocess returned error exit status 21
UpgradeStatus: Upgraded to bionic on 2018-05-05 (24 days ago)

[Joseph Salisbury (jsalisbury)]

Does your system boot if you select the previous kernel version from the GRUB menu?

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Jan Rudolph (drracket)]

Yes it does. This bug report was then triggered automatically upon booting.

Best,
Jan

On Tue, 29 May 2018, 17:50 Joseph Salisbury, <email address hidden>
wrote:

> Does your system boot if you select the previous kernel version from the
> GRUB menu?
>
> ** Package changed: linux-signed (Ubuntu) => linux (Ubuntu)
>
> ** Changed in: linux (Ubuntu)
> Importance: Undecided => High
>
> ** Tags added: kernel-da-key
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1773990
>
> Title:
> package linux-image-4.15.0-20-generic 4.15.0-20.21 failed to
> install/upgrade: installed linux-image-4.15.0-20-generic package post-
> removal script subprocess returned error exit status 21
>
> Status in linux package in Ubuntu:
> New
>
> Bug description:
> Happened after upgrading to 18.04 from 16.04. Ubuntu fails to boot
> with kernel 4.15 as well.
>
> ProblemType: Package
> DistroRelease: Ubuntu 18.04
> Package: linux-image-4.15.0-20-generic 4.15.0-20.21
> ProcVersionSignature: Ubuntu 4.13.0-39.44-generic 4.13.16
> Uname: Linux 4.13.0-39-generic x86_64
> ApportVersion: 2.20.9-0ubuntu7
> AptOrdering:
> linux-image-4.15.0-20-generic:amd64: Remove
> NULL: ConfigurePending
> Architecture: amd64
> Date: Tue May 29 16:12:20 2018
> DpkgTerminalLog:
> Removing linux-image-4.15.0-20-generic (4.15.0-20.21) ...
> Failed to create or replace /vmlinuz.old: Is a directory at
> /usr/bin/linux-update-symlinks line 72.
> dpkg: error processing package linux-image-4.15.0-20-generic (--remove):
> installed linux-image-4.15.0-20-generic package post-removal script
> subprocess returned error exit status 21
> DuplicateSignature:
> package:linux-image-4.15.0-20-generic:4.15.0-20.21
> Removing linux-image-4.15.0-20-generic (4.15.0-20.21) ...
> Failed to create or replace /vmlinuz.old: Is a directory at
> /usr/bin/linux-update-symlinks line 72.
> dpkg: error processing package linux-image-4.15.0-20-generic (--remove):
> installed linux-image-4.15.0-20-generic package post-removal script
> subprocess returned error exit status 21
> ErrorMessage: installed linux-image-4.15.0-20-generic package
> post-removal script subprocess returned error exit status 21
> InstallationDate: Installed on 2016-05-10 (748 days ago)
> InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
> (20160420.1)
> Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal,
> 3.6.5-3
> PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal,
> 2.7.15~rc1-1
> RelatedPackageVersions:
> dpkg 1.19.0.5ubuntu2
> apt 1.6.1
> SourcePackage: linux-signed
> Title: package linux-image-4.15.0-20-generic 4.15.0-20.21 failed to
> install/upgrade: installed linux-image-4.15.0-20-generic package
> post-removal script subprocess returned error exit status 21
> UpgradeStatus: Upgraded to bionic on 2018-05-05 (24 days ago)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1773990/+subscriptions
>