[Bug 1773816] Re: ugrade to ubuntu 18.04 crashes

[Jean-Baptiste Lallement]

Thanks for your report.

The Xorg packages from the oibaf PPA are blocking the upgrade. Please
revert to the official version of these package and try the upgrade
again.

I'm closing this report because it is not a bug with Ubuntu but do not
hesitate to file any bug you may find.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1773816

Title:
  ugrade to ubuntu 18.04 crashes

Status in ubuntu-release-upgrader package in Ubuntu:
  Invalid

Bug description:
  lsb_release -rd
  Description:	Ubuntu 16.04.2 LTS
  Release:	16.04

  
  apt-cache policy pkgname
  N: Paket pkgname kann nicht gefunden werden.

  
  Expectation: Upgrade to 18.04
  Actually happend: A unresolved problem is causing the abbortion of the upgrade 



  update-manager -d
  /usr/bin/update-manager:28: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
    from gi.repository import Gtk
  /usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Dbusmenu was imported without specifying a version first. Use gi.require_version('Dbusmenu', '0.4') before import to ensure that the right version gets loaded.
    from gi.repository import Dbusmenu, Unity
  /usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Unity was imported without specifying a version first. Use gi.require_version('Unity', '7.0') before import to ensure that the right version gets loaded.
    from gi.repository import Dbusmenu, Unity
  Neue Veröffentlichungen von Ubuntu werden gesucht
  /usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcher.py:23: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
    from gi.repository import Gtk, Gdk
  /usr/lib/python3/dist-packages/DistUpgrade/ReleaseNotesViewerWebkit.py:33: PyGIWarning: WebKit2 was imported without specifying a version first. Use gi.require_version('WebKit2', '4.0') before import to ensure that the right version gets loaded.
    from gi.repository import WebKit2 as WebKit
  Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
  »bionic.tar.gz« wird gegenüber »bionic.tar.gz.gpg« legitimiert 
  »bionic.tar.gz« wird entpackt

  (appstreamcli:15622): GLib-CRITICAL **: g_strchug: assertion 'string
  != NULL' failed

  (appstreamcli:15622): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed
  AppStream cache update completed, but some metadata was ignored due to errors.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.21 [origin: unknown]
  ProcVersionSignature: Ubuntu 4.4.0-101.124-generic 4.4.95
  Uname: Linux 4.4.0-101-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Mon May 28 17:10:38 2018
  InstallationDate: Installed on 2017-03-01 (453 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  JournalErrors:
   Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
         Users in the 'systemd-journal' group can see all messages. Pass -q to
         turn off this notice.
   No journal files were opened due to insufficient permissions.
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-05-28 (0 days ago)
  VarLogDistupgradeTermlog:

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