[Bug 1749199] Re: Session fails to start after an upgrade from Xenial to Bionic (leftover from upstart)

[Jean-Baptiste Lallement]

in /etc/X11/Xsession.d there are these 2 files:
00upstart
99upstart

The session starts after removing these 2 files.

** Summary changed:

- Session fails to start after an upgrade from Xenial to Bionic
+ Session fails to start after an upgrade from Xenial to Bionic (leftover from upstart)

** Changed in: gnome-session (Ubuntu)
   Importance: Undecided => Critical

** Changed in: gnome-session (Ubuntu)
       Status: New => Triaged

** Tags added: rls-bb-incoming

** Also affects: upstart (Ubuntu)
   Importance: Undecided
       Status: New

** Summary changed:

- Session fails to start after an upgrade from Xenial to Bionic (leftover from upstart)
+ Session fails to start after an upgrade from Xenial to Bionic (leftover from upstart, uninstall it on upgrade)

** Changed in: upstart (Ubuntu)
   Importance: Undecided => Critical

** Changed in: upstart (Ubuntu)
       Status: New => Triaged

** No longer affects: gnome-session (Ubuntu)

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https://bugs.launchpad.net/bugs/1749199

Title:
  purge conf files on removal of upstart (was session fails to start
  after an upgrade from xenial to bionic)

Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged
Status in upstart package in Ubuntu:
  Triaged

Bug description:
  After an upgrade from Xenial to Bionic the session fails to start and
  returns immediately to the login screen.

  There is this line in the journal
  [...] /usr/lib/gdm3/gdm-x-session[3584]: /etc/X11/Xsession.d/99x11-common_start: ligne 5: /sbin/upstart: Aucun fichier ou dossier de ce type

  (full journal from a failed attempt attached)

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-session 3.26.1-0ubuntu9
  ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
  Uname: Linux 4.13.0-32-generic x86_64
  ApportVersion: 2.20.8-0ubuntu8
  Architecture: amd64
  Date: Tue Feb 13 15:11:12 2018
  InstallationDate: Installed on 2018-02-07 (6 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: gnome-session
  UpgradeStatus: Upgraded to bionic on 2018-02-13 (0 days ago)

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