lightdm crashed with SIGSEGV in check_stopped()

[aectann]

A crash message poped up.. yet lightdm hasn't started on boot. So I had to do 'sudo lightdm restart' thing to get it running.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: lightdm 1.4.0-0ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-7.15-generic 3.8.0
Uname: Linux 3.8.0-7-generic x86_64
ApportVersion: 2.8-0ubuntu4
Architecture: amd64
Date: Tue Feb 19 12:07:59 2013
ExecutablePath: /usr/sbin/lightdm
InstallationDate: Installed on 2012-12-07 (77 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
LightdmConfig:
 [SeatDefaults]
 user-session=ubuntu
 greeter-session=unity-greeter
 allow-guest=false
 greeter-show-remote-login=false
MarkForUpload: True
ProcCmdline: lightdm
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x410518: mov 0x28(%rax),%ecx
 PC (0x00410518) 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_add_marshal_guards () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 ?? ()
 g_hash_table_lookup () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: lightdm crashed with SIGSEGV in g_closure_add_marshal_guards()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 check_stopped (seat=0x1c6b1e0) at seat.c:417
 g_closure_add_marshal_guards (closure=0x7f6ebce6d640 <g_cclosure_marshal_generic_va+1040>, pre_marshal_data=0xffffffff, pre_marshal_notify=0x0, post_marshal_data=<optimized out>, post_marshal_notify=<optimized out>) at /build/buildd/glib2.0-2.35.8/./gobject/gclosure.c:395
 ?? () at hooks.c:468 from /tmp/apport_sandbox_9ECWOO/lib/x86_64-linux-gnu/libc.so.6
 ?? ()
 g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x1c6f010, hash_table=0x4053a0 <malloc@plt>) at /build/buildd/glib2.0-2.35.8/./glib/ghash.c:365

[Robert Ancell (robert-ancell)]

Closing assumed fixed.