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[Hibernator <1473149@xxxxxxxxxxxxxxxxxx>]

Bug hit me with Ubuntu 15.10 Beta 2 and now again on today released
15.10.

What I did:
I attempted to apt install kubuntu-desktop on freshly installed system.

What happened:
apt-get failed showing :
Errors were encountered while processing:
 /var/cache/apt/archives/kde-config-telepathy-accounts_4%3a15.08.2-0ubuntu1_amd64.deb
 /var/cache/apt/archives/kaccounts-providers_4%3a15.08.2-0ubuntu1_all.deb
kde-telepathy-minimal: Depends: telepathy-mission-control-5 (>= 1:5.12) but 1:5.16.3-1ubuntu4 is installed
Package system was _completely_ broken. No more software installations or removals possible. apt-get install -f had no effect.
See also thread on this German Ubuntu forum about the broken package system bug: 
https://forum.ubuntuusers.de/topic/software-center-nach-installation-von-kde-auss/

At next reboot the system hung displaying only an Oxygen mouse cursor,
no login manager appeared.  System was completely trashed, not even
virtual consoles worked. See also this successor bug:
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1473149

What I expected to happen:
A smooth installation of KDE.

What I suspect to be the error:
The KDE package apparently installed incompletely due the bad dependencies mentioned and left the system in a broken state.

What I expect to be done:
Hot Fix: Remove the offending package "kde-telepathy" from metapackage kubuntu-desktop_1.331_amd64.deb.

PATCH INCLUDED:
I made and uploaded a patched kubuntu-desktop_1.331_amd64.deb package file which does not contain kde-telepathy.
To install KDE without destroying your system, download the patched .deb and install it via dpkg -i 

** Attachment added: "Patched kubuntu-desktop_1.331_amd64.deb without the offending subpackage kde-telepathy"
   https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1473149/+attachment/4502637/+files/kubuntu-desktop_1.331_amd64.deb

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1473149

Title:
  Lightdm refuses to work after installing kubuntu-desktop

Status in lightdm package in Ubuntu:
  Triaged

Bug description:
  After installing kubuntu-desktop meta package I saw a prompt telling me that both sddm and lightdm are available and I am forced to choose one between them.so I chose lightdm.on the next reboot I was unable to use GUI.
  After 2-3 weeks,I retried using sudo dpkg-reconfigure lightdm and selected lightdm.still fails to run GUI.
  sddm works fine and is able to handle both Plasma and Unity.
  Ubuntu 15.04 with lightdm 1.14.2-0ubuntu1

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: lightdm 1.14.2-0ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
  Uname: Linux 3.19.0-22-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Thu Jul  9 21:15:22 2015
  InstallationDate: Installed on 2015-06-09 (30 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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