[Bug 2035063] Re: package libpam0g:amd64 1.3.1-5ubuntu4.6 failed to install/upgrade: installed libpam0g:amd64 package post-installation script subprocess returned error exit status 128

[Steve Langasek]

The error in the logs is:

Use of uninitialized value in string eq at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 19.
Use of uninitialized value $ret in string eq at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 19.
Use of uninitialized value $_[1] in join or string at /usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 19.
Use of uninitialized value $val in substitution (s///) at /usr/share/perl5/Debconf/Format/822.pm line 83, <GEN2> line 14.
Use of uninitialized value $val in concatenation (.) or string at /usr/share/perl5/Debconf/Format/822.pm line 84, <GEN2> line 14.
dpkg: error processing package libpam0g:amd64 (--configure):
 installed libpam0g:amd64 package post-installation script subprocess returned error exit status 128

This suggests a crash in the debconf frontend that the pam maintainer
script was talking to.

Without a reproducible case for this, it is probably not actionable.

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

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

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https://bugs.launchpad.net/bugs/2035063

Title:
  package libpam0g:amd64 1.3.1-5ubuntu4.6 failed to install/upgrade:
  installed libpam0g:amd64 package post-installation script subprocess
  returned error exit status 128

Status in debconf package in Ubuntu:
  Incomplete

Bug description:
  running Ubuntu off a USB drive on my hp pavilion windows 10 laptop.
  This issue came up after upgrade from Bionic Beaver.

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: libpam0g:amd64 1.3.1-5ubuntu4.6
  ProcVersionSignature: Ubuntu 5.4.0-162.179-generic 5.4.246
  Uname: Linux 5.4.0-162-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.27
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Sun Sep 10 16:48:50 2023
  ErrorMessage: installed libpam0g:amd64 package post-installation script subprocess returned error exit status 128
  InstallationDate: Installed on 2023-09-06 (4 days ago)
  InstallationMedia: Ubuntu 18.04.6 LTS "Bionic Beaver" - Release amd64 (20210915)
  Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2.4
   apt  2.0.9
  SourcePackage: pam
  Title: package libpam0g:amd64 1.3.1-5ubuntu4.6 failed to install/upgrade: installed libpam0g:amd64 package post-installation script subprocess returned error exit status 128
  UpgradeStatus: No upgrade log present (probably fresh install)

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