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[Brian Murray <brian@xxxxxxxxxx>]

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https://bugs.launchpad.net/bugs/1422794

Title:
  lightdm-gtk-greeter crashed with SIGSEGV in cairo_surface_get_type()

Status in lightdm-gtk-greeter package in Ubuntu:
  Confirmed

Bug description:
  I'm on Xubuntu 15.04 Daily Build.  I simply changed the desktop
  environment in the Login screen from Xubuntu to Xfce, logged in, and
  was told that a system problem was detected before the panels/icons of
  the desktop environment even loaded.

  ProblemType: Crash
  DistroRelease: Ubuntu 15.04
  Package: lightdm-gtk-greeter 2.0.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.18.0-13.14-generic 3.18.5
  Uname: Linux 3.18.0-13-generic x86_64
  ApportVersion: 2.16.1-0ubuntu2
  Architecture: amd64
  Date: Tue Feb 17 11:01:23 2015
  ExecutablePath: /usr/sbin/lightdm-gtk-greeter
  InstallationDate: Installed on 2015-02-10 (7 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150208)
  ProcCmdline: /usr/sbin/lightdm-gtk-greeter
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/false
  SegvAnalysis:
   Segfault happened at: 0x7f010b7f7870 <cairo_surface_get_type>:	mov    0x10(%rdi),%eax
   PC (0x7f010b7f7870) ok
   source "0x10(%rdi)" (0x00000010) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: lightdm-gtk-greeter
  StacktraceTop:
   cairo_surface_get_type () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
   greeter_background_save_xroot ()
   _start ()
  Title: lightdm-gtk-greeter crashed with SIGSEGV in cairo_surface_get_type()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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