[Bug 1773200] Re: package postfix (not installed) failed to install/upgrade: new postfix package pre-installation script subprocess returned error exit status 1

[Scott Kitterman]

It looks more like a debconf issue to me:

Preparing to unpack .../1-postfix_3.3.0-1_amd64.deb ...
Gtk-Message: 20:19:38.211: GtkDialog mapped without a transient parent. This is discouraged.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
Use of uninitialized value in numeric eq (==) at /var/lib/dpkg/tmp.ci/config line 55, <STDIN> line 5.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
Use of uninitialized value $mailertype in string eq at /var/lib/dpkg/tmp.ci/config line 57, <STDIN> line 5.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
Use of uninitialized value $mailertype in string eq at /var/lib/dpkg/tmp.ci/config line 67, <STDIN> line 5.
Use of uninitialized value $mailertype in string eq at /var/lib/dpkg/tmp.ci/config line 67, <STDIN> line 5.
Use of uninitialized value $mailertype in string eq at /var/lib/dpkg/tmp.ci/config line 67, <STDIN> line 5.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
Use of uninitialized value $ret in scalar chomp at /usr/share/perl5/Debconf/Client/ConfModule.pm line 132, <STDIN> line 5.
Use of uninitialized value $ret in split at /usr/share/perl5/Debconf/Client/ConfModule.pm line 133, <STDIN> line 5.
Use of uninitialized value $ret[0] in string eq at /usr/share/perl5/Debconf/Client/ConfModule.pm line 134, <STDIN> line 5.
dpkg: error processing archive /tmp/apt-dpkg-install-0R1mHg/1-postfix_3.3.0-1_amd64.deb (--unpack):
 new postfix package pre-installation script subprocess returned error exit status 1

** Package changed: postfix (Ubuntu) => debconf (Ubuntu)

** Changed in: debconf (Ubuntu)
       Status: Invalid => New

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https://bugs.launchpad.net/bugs/1773200

Title:
  package postfix (not installed) failed to install/upgrade: new postfix
  package pre-installation script subprocess returned error exit status
  1

Status in debconf package in Ubuntu:
  New

Bug description:
  A window about the error have just appeared when trying to install a
  soft by Synaptic

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: postfix (not installed)
  ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
  Uname: Linux 4.15.0-22-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  Date: Thu May 24 20:20:09 2018
  ErrorMessage: new postfix package pre-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2018-05-22 (1 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  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: postfix
  Title: package postfix (not installed) failed to install/upgrade: new postfix package pre-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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