[Bug 1542912] Re: ubuntu-mate-core and lightdm do not upgrade cleanly

[Winfried PLappert]

here is:
/var/log/apt/term.log

** Attachment added: "/var/log/apt/term.log compressed with gzip -9"
   https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1542912/+attachment/4566351/+files/term.log.gz

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https://bugs.launchpad.net/bugs/1542912

Title:
  ubuntu-mate-core and lightdm do not upgrade cleanly

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

Bug description:
  When upgrading from ubuntu-mate alpha2 to the current version in the
  repositories, the upgrade throws an error after executing "sudo apt-
  get install -f":

  insserv: Service dbus has to be enabled to start service lightdm
  insserv: exiting now!
  update-rc.d: error: insserv rejected the script header
  dpkg: error processing package lightdm (--configure):
   subprocess installed post-installation script returned error exit status 1
  dpkg: dependency problems prevent configuration of ubuntu-mate-core:
   ubuntu-mate-core depends on lightdm; however:
    Package lightdm is not configured yet.

  dpkg: error processing package ubuntu-mate-core (--configure):
   dependency problems - leaving unconfigured
  No apport report written because the error message indicates its a followup error from a previous failure.
                            Errors were encountered while processing:
   lightdm
   ubuntu-mate-core
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  
  additional info:
  lsb_release -rd
  Description:	Ubuntu Xenial Xerus (development branch)
  Release:	16.04

  .  What you expected to happen: clean upgrade
  . What happened instead: errors, as show above.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.4
  ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
  Uname: Linux 4.4.0-2-generic x86_64
  ApportVersion: 2.19.4-0ubuntu2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: MATE
  Date: Sun Feb  7 14:02:50 2016
  InstallationDate: Installed on 2016-02-06 (0 days ago)
  InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160127.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)

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