[Bug 1876548] [NEW] Could not install linux-image-unsigned-5.0.0-36-generic

[eingley]

Public bug reported:

Updated from Ubuntu 18.04 to Ubuntu 20.04. Can now only do partial
upgrades with error message: installed linux-image-
unsigned-5.0.0-36-generic package post-removal script subprocess
returned error exit status 1. I have tried removing this package through
various terminal commands and synaptic package manager. Always returns
this message.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.8
ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3
Uname: Linux 5.4.0-9-generic x86_64
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sun May  3 15:17:57 2020
InstallationDate: Installed on 2011-08-27 (3171 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110426)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeAptHistorylog:
 Start-Date: 2020-05-03  15:16:10
 Requested-By: eingley (1000)
 Remove: linux-image-unsigned-5.0.0-36-generic:amd64 (5.0.0-36.39~18.04.1)
 Error: Sub-process /usr/bin/dpkg returned an error code (1)
 End-Date: 2020-05-03  15:16:37
VarLogDistupgradeAptlog:
 Log time: 2020-05-03 15:15:46.834531
 Starting pkgProblemResolver with broken count: 0
 Starting 2 pkgProblemResolver with broken count: 0
 Done
   MarkDelete linux-image-unsigned-5.0.0-36-generic:amd64 < 5.0.0-36.39~18.04.1 @rH mK Nb Ib > FU=0
VarLogDistupgradeTermlog:
 
modified.conffile..etc.default.apport:
 # set this to 0 to disable apport, or to 1 to enable it
 # you can temporarily override this with
 # sudo service apport start force_start=1
 enabled=0
mtime.conffile..etc.default.apport: 2019-04-27T17:49:35.111043

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade focal

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https://bugs.launchpad.net/bugs/1876548

Title:
  Could not install linux-image-unsigned-5.0.0-36-generic

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Updated from Ubuntu 18.04 to Ubuntu 20.04. Can now only do partial
  upgrades with error message: installed linux-image-
  unsigned-5.0.0-36-generic package post-removal script subprocess
  returned error exit status 1. I have tried removing this package
  through various terminal commands and synaptic package manager. Always
  returns this message.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.8
  ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3
  Uname: Linux 5.4.0-9-generic x86_64
  ApportVersion: 2.20.11-0ubuntu15
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sun May  3 15:17:57 2020
  InstallationDate: Installed on 2011-08-27 (3171 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110426)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_AU:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)
  VarLogDistupgradeAptHistorylog:
   Start-Date: 2020-05-03  15:16:10
   Requested-By: eingley (1000)
   Remove: linux-image-unsigned-5.0.0-36-generic:amd64 (5.0.0-36.39~18.04.1)
   Error: Sub-process /usr/bin/dpkg returned an error code (1)
   End-Date: 2020-05-03  15:16:37
  VarLogDistupgradeAptlog:
   Log time: 2020-05-03 15:15:46.834531
   Starting pkgProblemResolver with broken count: 0
   Starting 2 pkgProblemResolver with broken count: 0
   Done
     MarkDelete linux-image-unsigned-5.0.0-36-generic:amd64 < 5.0.0-36.39~18.04.1 @rH mK Nb Ib > FU=0
  VarLogDistupgradeTermlog:
   
  modified.conffile..etc.default.apport:
   # set this to 0 to disable apport, or to 1 to enable it
   # you can temporarily override this with
   # sudo service apport start force_start=1
   enabled=0
  mtime.conffile..etc.default.apport: 2019-04-27T17:49:35.111043

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