[Bug 1724959] Re: update-manager crashed after purging padoka PPA and trying to install an update. Depends in _show_transaction(): zlib1g (>= 1:1.1.4) but 1:1.2.11.dfsg-0ubuntu2 is installed

[Balint Reczey]

*** This bug is a duplicate of bug 1317164 ***
    https://bugs.launchpad.net/bugs/1317164

** This bug is no longer a duplicate of private bug 1341176
** This bug has been marked a duplicate of bug 1317164
   Show reason of TransactionFailed and let the user try again instead of crashing

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Title:
  update-manager crashed after purging padoka PPA and trying to install
  an update.                       Depends in _show_transaction():
  zlib1g (>= 1:1.1.4) but 1:1.2.11.dfsg-0ubuntu2 is installed

Status in update-manager package in Ubuntu:
  New

Bug description:
  Not sure exactly what I am doing the crash took me here, but I ran
  into this error when I was trying to get steam to work and it was
  missing libGL.so.1. I saw in the terminal that it was complaining
  about a file that the padoka PPA installed, so I purged it and then
  went to update and thats when update-manager crashed. I ran whatever
  it said and everything seems to be working for me now.

  Ubuntu 17.10

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: update-manager 1:17.10.11
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Oct 19 16:05:36 2017
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'557'
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'window-width' b'1190'
   b'com.ubuntu.update-manager' b'launch-time' b'int64 1508443517'
  InstallationDate: Installed on 2017-10-19 (0 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  InterpreterPath: /usr/bin/python3.6
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/bin/update-manager
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2
  PythonArgs: ['/usr/bin/update-manager']
  PythonDetails: /home/richard/Error: command ['which', 'python'] failed with exit code 1:, Error: [Errno 2] No such file or directory: "/home/richard/Error: command ['which', 'python'] failed with exit code 1:": "/home/richard/Error: command ['which', 'python'] failed with exit code 1:", unpackaged
  SourcePackage: update-manager
  Title: update-manager crashed with                       Depends in _show_transaction(): zlib1g (>= 1:1.1.4) but 1:1.2.11.dfsg-0ubuntu2 is installed
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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