[Bug 1800065] Re: package tzdata 2018f-0ubuntu0.18.10 failed to install/upgrade: installed tzdata package post-installation script subprocess returned error exit status 128

[Benjamin Drung]

*** This bug is a duplicate of bug 1914875 ***
    https://bugs.launchpad.net/bugs/1914875

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

This particular bug has already been reported and is a duplicate of bug
#1914875, so it is being marked as such. Please look at the other bug
report to see if there is any missing information that you can provide,
or to see if there is a workaround for the bug. Additionally, any
further discussion regarding the bug should occur in the other report.
Feel free to continue to report any other bugs you may find.

** This bug has been marked a duplicate of bug 1914875
   Use of uninitialized value $ret in string eq at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 134.

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https://bugs.launchpad.net/bugs/1800065

Title:
  package tzdata 2018f-0ubuntu0.18.10 failed to install/upgrade:
  installed tzdata package post-installation script subprocess returned
  error exit status 128

Status in tzdata package in Ubuntu:
  Confirmed

Bug description:
  The tzdata package fails to upgrade:

  ```
  Setting up tzdata (2018f-0ubuntu0.18.10) ...
  Use of uninitialized value $ret in string eq at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 134.
  dpkg: error processing package tzdata (--configure):
   installed tzdata package post-installation script subprocess returned error exit status 128
  ```

  ProblemType: Package
  DistroRelease: Ubuntu 18.10
  Package: tzdata 2018f-0ubuntu0.18.10
  ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
  Uname: Linux 4.18.0-10-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  Date: Thu Oct 25 19:17:40 2018
  DuplicateSignature:
   package:tzdata:2018f-0ubuntu0.18.10
   Setting up tzdata (2018f-0ubuntu0.18.10) ...
   Use of uninitialized value $ret in string eq at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 134.
   dpkg: error processing package tzdata (--configure):
    installed tzdata package post-installation script subprocess returned error exit status 128
  ErrorMessage: installed tzdata package post-installation script subprocess returned error exit status 128
  InstallationDate: Installed on 2018-10-25 (0 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
  PackageArchitecture: all
  Python3Details: /usr/bin/python3.6, Python 3.6.7rc1, python3-minimal, 3.6.6-1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu5
   apt  1.7.0
  SourcePackage: tzdata
  Title: package tzdata 2018f-0ubuntu0.18.10 failed to install/upgrade: installed tzdata package post-installation script subprocess returned error exit status 128
  UpgradeStatus: No upgrade log present (probably fresh install)

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