[Bug 1871960] Re: package libpam-modules 1.1.8-3.6ubuntu2.18.04.1 failed to install/upgrade: pre-dependency problem - not installing libpam-modules:amd64

[Brian Murray]

I tested an upgrade from Bionic to Focal with -proposed enabled (I had
to remove the disabling of -proposed in DistUpgradeController.py) and
did not encounter any of the following error messages:

GLib-GObject-WARNING **: specified class size for type 'PangoCairoFcFont' is smaller than the parent type's 'PangoFcFont' class size at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.
GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.
GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.
GLib-GObject-CRITICAL **: g_object_new_valist: assertion 'G_TYPE_IS_OBJECT (object_type)' failed at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.

I had seen them when I tried upgrading the same virtual machine when
-proposed was not enabled. Attached you'll find my apt-term.log from the
successful upgrade.

** Attachment added: "apt-term.log"
   https://bugs.launchpad.net/ubuntu/+source/libgtk3-perl/+bug/1871960/+attachment/5357734/+files/apt-term.log

** Also affects: pango1.0 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: pango1.0 (Ubuntu Focal)
       Status: New => Confirmed

** Changed in: pango1.0 (Ubuntu Focal)
   Importance: Undecided => Critical

** Changed in: pango1.0 (Ubuntu Focal)
    Milestone: None => ubuntu-20.04

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Title:
  package libpam-modules 1.1.8-3.6ubuntu2.18.04.1 failed to
  install/upgrade: pre-dependency problem - not installing libpam-
  modules:amd64

Status in libgtk3-perl package in Ubuntu:
  Confirmed
Status in pango1.0 package in Ubuntu:
  Confirmed
Status in libgtk3-perl source package in Focal:
  Confirmed
Status in pango1.0 source package in Focal:
  Confirmed

Bug description:
  I was updating ubuntu to the 20.04 version. Not all packages were
  updated. I receive new errors every few seconds. what should I do?

  Thanks
  safi

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: libpam-modules 1.1.8-3.6ubuntu2.18.04.1
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  ApportVersion: 2.20.11-0ubuntu25
  Architecture: amd64
  Date: Fri Apr 10 00:36:08 2020
  ErrorMessage: pre-dependency problem - not installing libpam-modules:amd64
  InstallationDate: Installed on 2019-12-28 (102 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.1ubuntu1
  SourcePackage: pam
  Title: package libpam-modules 1.1.8-3.6ubuntu2.18.04.1 failed to install/upgrade: pre-dependency problem - not installing libpam-modules:amd64
  UpgradeStatus: Upgraded to focal on 2020-04-09 (0 days ago)

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