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[George Langford <amenex@xxxxxxxxxx>]

With continuing attention to this bug I discovered that I could select
Lubuntu at login and that this got me to a proper Desktop with full
access to the OS's procedures, accessories and applications, including
the other primary partitions on the hard drive and to my LAN.

See Question 259840, which I marked as solved.

The bug reported here did not repeat on several restarts, although
attempts to start Ubuntu, Gnome-Classic, and Gnome via this same route
(a long list of alternatives being presented at login) all produced
crashes or negative outcomes. As always, I could get to the Terminal in
nearly all cases with contr+alt+F*.

Hence, the bug reported here shows tons of information about my
installation history, which may yet prove quite useful, this bug isn't
bugging me any more ... the dskyop PC is now useful again.

-- 
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/1406970

Title:
  package lightdm 1.10.3-0ubuntu2 failed to install/upgrade: subprocess
  installed post-removal script returned error exit status 1

Status in lightdm package in Ubuntu:
  New

Bug description:
  This installation has not succeeded in getting past a login page with
  a menu bar at the top that has my network name at upper left and some
  additional menu icons at top right, including a classic gnome menu
  containing just three items: high contrast, on-screen keyboard, and
  read [something-or-other], The only thing I could do with this is use
  the on-screen keyboard to enter my password.

  Entering my password after selecting gnome classic (or ubuntu or gnome
  default) produces lots of hard drive activity but nothing further -
  the OS sticks at an orange wallpaper screen that thankfully fits the
  monitor with Ubunto 14.04 LTS at lower left. No menus to select from
  ... no menu bar.

  While mucking about to try to get past this impasse, I found this error message after entering: sudo lightdm --test-mode from the Terminal console:
                                               failed to use bus name org.freedesktop.DisplayManager

  Searching on that term in Google, I came upon an answer with these
  instructions:

  sudo dpkg-reconfigure gdm #select gdm
  sudo apt-get remove lightdm* --purge
  sudo reboot
  sudo apt-get install lightdm*

  whereupon the dpkg-reconfigure screen came up automatically (that had
  been the fifth instruction in the list above) and I selected lightdm.

  Upon rebooting I got a series of error messages culminating in this
  bug report.

  My next step will be to go through an analogous ritual to attempt a
  reinstall of gdm, which also fails on startup.

  I am using Ubuntu 14.04 on an HP 6430NX that has 2GB of RAM, a Philips
  107S monitor, a Pro Savage 8KM266/KL266 video card, a.k.a. S3 Graphics
  LTD VT8375, and a 250GB hard drive with three primary partitions (two
  ext4 and one FAT32) a swap partition, and an extended partition.

  The present installation of Ubuntu was from a USB flash drive that
  works fine with a Dell Inspiron laptop, but which gives no graphical
  or textual feedback at all when connected to the USB port of the
  6430NX computer (set to boot from a USB HDD in bios). I discovered the
  Ubunto installation when I connected the 250 GB hard drive via USB to
  the Inspiron laptop while using gparted to realign and create the
  present partition structure. However, changing the paritions had no
  effect whatsoever on the present lack-of-usable-GUI behavior.

  I am George Langford, a.k.a. amenex.

  Note: this bug screen does not like the package name I entered
  (lightdm 1.10.3 -0ubuntu2) but that is exactly what the error message
  said it is.

  ProblemType: Package
  DistroRelease: Ubuntu 14.04
  Package: lightdm 1.10.3-0ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
  Uname: Linux 3.13.0-43-generic i686
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: i386
  Date: Thu Jan  1 12:37:36 2015
  DuplicateSignature: package:lightdm:1.10.3-0ubuntu2:subprocess installed post-removal script returned error exit status 1
  ErrorMessage: subprocess installed post-removal script returned error exit status 1
  LightdmConfig:
   [SeatDefaults]
   user-session=mythbuntu
   allow-guest=false
   #autologin-user=
  LightdmGreeterLog:
   ** (lightdm-gtk-greeter:1294): WARNING **: Failed to load user background: Failed to open file '/home/george/Pictures/BackYard10062014.jpg': No such file or directory
   
   ** (lightdm-gtk-greeter:1294): WARNING **: Failed to load user image: Failed to open file '/home/george/.face': No such file or directory
  SourcePackage: lightdm
  Title: package lightdm 1.10.3-0ubuntu2 failed to install/upgrade: subprocess installed post-removal script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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