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[Mathew Hodson <mathew.hodson@xxxxxxxxx>]

** Changed in: unity (Ubuntu Precise)
     Assignee: peterstan (stasnel) => (unassigned)

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https://bugs.launchpad.net/bugs/1020075

Title:
  compiz crashed with SIGSEGV in
  unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent()

Status in Unity:
  Fix Released
Status in Unity 5.0 series:
  Fix Released
Status in unity package in Ubuntu:
  Fix Released
Status in unity source package in Precise:
  Fix Released

Bug description:
  [Test Case]
  No clear test case. Ensure that unity does not crash when adjusting screen settings or after login.

  [Regression Potential]
  Launchers not put correctly on multiple monitors, edge barriers broken.

  Original description:

  This happened when adjusting my second monitor to be twin view and w/o
  sticky edges.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: compiz-core 1:0.9.8+bzr3249-0ubuntu2
  ProcVersionSignature: Ubuntu 3.5.0-2.2-generic 3.5.0-rc4
  Uname: Linux 3.5.0-2-generic x86_64
  ApportVersion: 2.2.5-0ubuntu1
  Architecture: amd64
  Date: Mon Jul  2 07:34:15 2012
  Disassembly: => 0x3d77:	Cannot access memory at address 0x3d77
  ExecutablePath: /usr/bin/compiz
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120629)
  ProcCmdline: compiz
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x3d77:	Cannot access memory at address 0x3d77
   PC (0x00003d77) not located in a known VMA region (needed executable region)!
  SegvReason: executing NULL VMA
  Signal: 11
  SourcePackage: compiz
  StacktraceTop:
   ?? ()
   unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent(unity::ui::PointerBarrierWrapper*, std::shared_ptr<unity::ui::BarrierEvent>) () from /usr/lib/compiz/libunityshell.so
   sigc::internal::slot_call2<sigc::bound_mem_functor2<void, unity::ui::EdgeBarrierController::Impl, unity::ui::PointerBarrierWrapper*, std::shared_ptr<unity::ui::BarrierEvent> >, void, unity::ui::PointerBarrierWrapper*, std::shared_ptr<unity::ui::BarrierEvent> >::call_it(sigc::internal::slot_rep*, unity::ui::PointerBarrierWrapper* const&, std::shared_ptr<unity::ui::BarrierEvent> const&) () from /usr/lib/compiz/libunityshell.so
   unity::ui::PointerBarrierWrapper::EmitCurrentData() () from /usr/lib/compiz/libunityshell.so
   ?? () from /usr/lib/compiz/libunityshell.so
  Title: compiz crashed with SIGSEGV in unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  XsessionErrors:
   (compiz:1883): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed
   gnome-session[1806]: WARNING: Application 'compiz.desktop' killed by signal 11
   gnome-session[1806]: WARNING: App 'compiz.desktop' respawning too quickly
   gnome-session[1806]: CRITICAL: We failed, but the fail whale is dead. Sorry....
   (compiz:2518): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed

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