[Bug 1423356] Re: package python3-distupgrade 1:15.04.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Launchpad Bug Tracker]

*** This bug is a duplicate of bug 1423279 ***
    https://bugs.launchpad.net/bugs/1423279

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1423356

Title:
  package python3-distupgrade 1:15.04.6 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 1

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

Bug description:
  
  Using grahical "softwaqre updater" I get
  Failed to download repository information
  I have an active connecdtion....
  clicking "ok" button bings
  "No Softwqre Updates Available"

  using CL

  #sudo apt-get dist-upgrade

  dpkg: dependency problems prevent configuration of ubuntu-release-upgrader-gtk:
   ubuntu-release-upgrader-gtk depends on ubuntu-release-upgrader-core (= 1:15.04.6); however:
    Package ubuntu-release-upgrader-core is not configured yet.
   ubuntu-release-upgrader-gtk depends on python3-distupgrade (= 1:15.04.6); however:
    Package python3-distupgrade is not configured yet

  dpkg: error processing package update-manager (--configure):
   dependency problems - leaving unconfigured
  Processing triggers for libc-bin (2.19-15ubuntu1) ...
  Processing triggers for initramfs-tools (0.103ubuntu12) ...
  update-initramfs: Generating /boot/initrd.img-3.18.0-13-generic
  Processing triggers for menu (2.1.47ubuntu1) ...
  Errors were encountered while processing:
   python3-distupgrade
   python3-update-manager
   ubuntu-release-upgrader-core
   update-manager-core
   ubuntu-release-upgrader-gtk
   update-manager
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Package
  DistroRelease: Ubuntu 15.04
  Package: python3-distupgrade 1:15.04.6
  ProcVersionSignature: Ubuntu 3.18.0-13.14-generic 3.18.5
  Uname: Linux 3.18.0-13-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.16.1-0ubuntu2
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Feb 18 12:04:22 2015
  DuplicateSignature: package:python3-distupgrade:1:15.04.6:subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2015-02-12 (6 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150113)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Title: package python3-distupgrade 1:15.04.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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