[Bug 1505021] Re: do-release-ubgrade from 12.04 LTS to 14.04 LTS fails

[Mark Fortescue]

I am finally back at square one: 10.04 LTS. I have attached the output of 'apt-show-versions' just in case something in this is important in this two phase update.
The only non-default environment setting is the locale: LANG=C.
I will start by doing the upgrade to 12.04 LTS and them make backups of the intermediate step so that (assuming it fails as before) I can recover to the intermediate step in less time.
The upgrades will be done over ssh as before and I will try to capture any unexpected behaviour for analysis. This make take some time as I have other work to do so will have to fit the slow interactive update parts in with other things.


** Attachment added: "apt-show-versions for LTS 10.04 starting point"
   https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1505021/+attachment/4492648/+files/installed-LTS-10.04.gz

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https://bugs.launchpad.net/bugs/1505021

Title:
  do-release-ubgrade from 12.04 LTS to 14.04 LTS fails

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

Bug description:
  The command fails as shown:

  > sudo do-release-upgrade
  Checking for a new Ubuntu release
  Get:1 Upgrade tool signature [198 B]                                                                                                                          
  Get:2 Upgrade tool [1156 kB]                                                                                                                                  
  Fetched 1156 kB in 0s (0 B/s)                                                                                                                                 
  authenticate 'trusty.tar.gz' against 'trusty.tar.gz.gpg' 
  extracting 'trusty.tar.gz'
  can't load DistUpgradeViewText (unsupported locale setting)

  (process:24719): Gtk-WARNING **: Locale not supported by C library.
          Using the fallback 'C' locale.
  can't load DistUpgradeViewGtk3 (Gtk couldn't be initialized)
  /usr/lib/python2.7/dist-packages/gobject/constants.py:26: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
    import gobject._gobject

  ** (trusty:24719): WARNING **: Command line `dbus-launch --autolaunch=20a1515e7ef2f2b18635e6124c5f4699 --binary-syntax --close-stderr' exited with non-zero exit status 1: Autolaunch error: X11 initialization failed.\n
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: specified class size for type `PyGtkGenericCellRenderer' is smaller than the parent type's `GtkCellRenderer' class size
    from gtk import _gtk
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_type_get_qdata: assertion `node != NULL' failed
    from gtk import _gtk

  One of the causes is simply that my local setting is 'LANG=C' which is
  the default locale and must always be supported by the C library
  despite the messages given (it is the default so it must be supported
  !!!).

  Using 'LANG=enGB.utf8  sudo do-release-upgrade' gets further but I
  still get  python/gtk warnings that someone needs to sort out.

  gtk: gir1.2-gtk-2.0: Installed: 2.24.10-0ubuntu6.2
  python: Installed: 2.7.3-0ubuntu2.2

  The starting point was 10.04 LTS.  This was upgraded to 12.04.5 LTS
  and I am now trying to update to 14.04 LTS.

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