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[Shaleen Jain <shaleen.jain95@xxxxxxxxx>]

** Changed in: lightdm (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1528473

Title:
  Unity session doesn't start after login from lightdm

Status in lightdm package in Ubuntu:
  Invalid

Bug description:
  
  lightdm authenticates and logs in a user and a session is created but the screen hangs there forever. 
  Same for the guest user.

  I am able to login from the other text terminals.

  unity --replace results in 
  WARNING: no DISPLAY variable set, setting it to :0
  Traceback (most recent call last):
    File "/usr/bin/unity", line 207, in <module>
      run_unity  (options.verbose, options.debug, options.advanced_debug, options.compiz_path, args, options.log)
    File "/usr/bin/unity", line 129, in run_unity
      subprocess.call(["stop", "unity-panel-service"])
    File "/usr/lib/python2.7/subprocess.py", line 522, in call
      return Popen(*popenargs, **kwargs).wait()
    File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
      errread, errwrite)
    File "/usr/lib/python2.7/subprocess.py", line 1335, in _execute_child
      raise child_exception
  OSError: [Errno 2] No such file or directory

  sudo unity --replace starts compiz and unity with reduced
  functionality i.e no applets or system bar and dbus errors.

  Description:	Ubuntu 15.10
  Release:	15.10
  lightdm:
    Installed: 1.16.6-0ubuntu1
    Candidate: 1.16.6-0ubuntu1
    Version table:
   *** 1.16.6-0ubuntu1 0
          500 http://in.archive.ubuntu.com/ubuntu/ wily-updates/main i386 Packages
          100 /var/lib/dpkg/status
       1.16.4-0ubuntu1 0
          500 http://in.archive.ubuntu.com/ubuntu/ wily/main i386 Packages

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: lightdm 1.16.6-0ubuntu1
  ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
  Uname: Linux 4.2.0-22-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Tue Dec 22 12:24:22 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-06-20 (185 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  SourcePackage: lightdm
  UpgradeStatus: Upgraded to wily on 2015-12-18 (3 days ago)

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