I've tried lightdm-gtk-greeter and kylin-greeter and the same crash
occurs. So I'm back to thinking this issue is with lightdm. Some data or
configuration its passing to the greeter is causing it to fail.

I've removed all the dot directories (.cache, .config, .dbus, .gconf,
and .local) inside of /var/lib/lightdm and still am experiencing this.

** Summary changed:

- unity-greeter crashes causing lightdm to fail to start
+ lightdm causes all greeters to fail to start

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

** Also affects: lightdm
   Importance: Undecided
       Status: New

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1662244

Title:
  lightdm causes all greeters to fail to start

Status in Light Display Manager:
  New
Status in lightdm package in Ubuntu:
  New
Status in unity-greeter package in Ubuntu:
  New

Bug description:
  lightdm is failing to start. Best guess is because of unity-session-
  manager. This is from .xsession-errors.

  dbus-update-activation-environment: setting 
_=/usr/bin/dbus-update-activation-environment
  upstart: click-user-hooks main process (4028) terminated with status 1
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon main process ended, respawning
  upstart: unity-settings-daemon respawning too fast, stopped
  upstart: indicator-application main process ended, respawning
  upstart: indicator-application main process ended, respawning
  upstart: indicator-application respawning too fast, stopped
  xbrlapi: window 0x03a00084 changed to NULL name
  xbrlapi: window 0x03a00084 changed to NULL name
  xbrlapi: window 0x03c00084 changed to NULL name
  xbrlapi: window 0x03c00084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  xbrlapi: window 0x04000084 changed to NULL name
  upstart: dbus main process (4023) killed by TERM signal

  
  I've tried to move aside $HOME/.config/dconf/user and that didn't work. I've 
reverted kernel versions and that didn't work. I've moved aside $HOME/.cache 
and that didn't work.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: lightdm 1.19.5-0ubuntu1
  ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6
  Uname: Linux 4.8.0-30-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.3-0ubuntu8.2
  Architecture: amd64
  Date: Mon Feb  6 10:21:29 2017
  InstallationDate: Installed on 2015-07-20 (566 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: lightdm
  UpgradeStatus: Upgraded to yakkety on 2016-12-14 (53 days ago)

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