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[Apport retracing service <903299@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 902698 ***
    https://bugs.launchpad.net/bugs/902698

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #902698, so is being marked as such.  Please
look at the other bug report to see if there is any missing information
that you can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** Attachment removed: "CoreDump.gz"
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** Attachment removed: "Dependencies.txt"
   https://bugs.launchpad.net/bugs/903299/+attachment/2629789/+files/Dependencies.txt

** Attachment removed: "Disassembly.txt"
   https://bugs.launchpad.net/bugs/903299/+attachment/2629790/+files/Disassembly.txt

** Attachment removed: "ProcStatus.txt"
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** Attachment removed: "Registers.txt"
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** Attachment removed: "ThreadStacktrace.txt"
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** Visibility changed to: Public

** This bug has been marked a duplicate of private bug 902698

** Visibility changed to: Public

** Tags removed: need-amd64-retrace

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/903299

Title:
  lightdm crashed with SIGSEGV in g_closure_invoke()

Status in “lightdm” package in Ubuntu:
  New

Bug description:
  Recent update hosed my system. Things are so broken I don't know what
  caused what or what's relevant to what bug. Help?

  X doesn't start automatically. Xorg.0.log suggests a problem with
  nvidia driver, but it's present in lsmod, and startx works. Well, it
  starts X anyway... My startx session is lacking Unity, or for that
  matter, any meaningful menus. I only managed to get firefox open
  because I got an apport dialog for lightdm segfaulting. There appears
  to be a window manager running, and a... file manager? I have a
  menubar at the top that appears to have come off a file manager
  window, and File->New Window opens the file manager. Nothing else
  though -- I can't open so much as a terminal without invoking it
  outside the X session.

  I can't do any meaningful testing like this... should I try to fix
  this or reinstall Precise from scratch?

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: lightdm 1.0.6-0ubuntu4
  ProcVersionSignature: Ubuntu 3.2.0-4.10-generic 3.2.0-rc5
  Uname: Linux 3.2.0-4-generic x86_64
  NonfreeKernelModules: nvidia wl
  ApportVersion: 1.90-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  Date: Mon Dec 12 11:00:33 2011
  ExecutablePath: /usr/sbin/lightdm
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
  ProcCmdline: lightdm
  ProcEnviron: PATH=(custom, no user)
  SegvAnalysis:
   Segfault happened at: 0x411138:	mov    0x28(%rax),%ecx
   PC (0x00411138) ok
   source "0x28(%rax)" (0xaaaaaaaaaaaaaad2) not located in a known VMA region (needed readable region)!
   destination "%ecx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: lightdm
  StacktraceTop:
   ?? ()
   g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  Title: lightdm crashed with SIGSEGV in g_closure_invoke()
  UpgradeStatus: Upgraded to precise on 2011-12-11 (1 days ago)
  UserGroups:

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