This bug was fixed in the package xorg - 1:7.7+19ubuntu5
---------------
xorg (1:7.7+19ubuntu5) bionic; urgency=medium
* Cleanup upstart Xsession.d files, when upstart is removed, but not
purged, and thus breaking graphical login after upgrades. LP: #1749199
-- Dimitri John Ledkov <x...@ubuntu.com> Thu, 22 Feb 2018 16:43:18
+0000
** Changed in: xorg (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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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 xorg package in Ubuntu:
Fix Released
Status in ubuntu-release-upgrader source package in Bionic:
Triaged
Status in xorg source package in Bionic:
Fix Released
Bug description:
[Testcase]
1. Launch xenial lxd container
2. install x11-common upstart
3. do-release-upgrade to bionic
4. Upgrade to bionic removes upstart
5. upgrade to new x11-common, make sure the upstart snippets are gone from
disk: /etc/X11/Xsession.d/00upstart
/etc/X11/Xsession.d/99upstart
6. for the new release-upgrader, check that upstart is purged, if user
selects to remove packages at the end of the do-release-upgrade.
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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