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["Stephen M. Webb" <stephen.webb@xxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1282884 ***
    https://bugs.launchpad.net/bugs/1282884

** Attachment removed: "CoreDump.gz"
   https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1284928/+attachment/3997147/+files/CoreDump.gz

** Information type changed from Private to Public

** This bug has been marked a duplicate of bug 1282884
   compiz crashed with SIGSEGV in __dynamic_cast()

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https://bugs.launchpad.net/bugs/1284928

Title:
  compiz crashed with SIGSEGV in __dynamic_cast()

Status in “unity” package in Ubuntu:
  New

Bug description:
  It happened suddenly, I cannot reproduce it. It suddenly stuck and
  after 10/20 seconds Unity restarted.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: unity 7.1.2+14.04.20140220-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3
  Uname: Linux 3.13.0-11-generic x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Feb 25 20:51:23 2014
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2013-12-13 (75 days ago)
  InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  ProcCmdline: compiz
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x477bec0:	mov    %ch,0x3c3(%rdx)
   PC (0x0477bec0) in non-executable VMA region: 0x01cda000-0x04ed5000 rw-p [heap]
   source "%ch" ok
   destination "0x3c3(%rdx)" (0x000003c9) not located in a known VMA region (needed writable region)!
  SegvReason:
   executing writable VMA [heap]
   writing NULL VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   ?? ()
   __dynamic_cast () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
   nux_base_window_accessible_check_active () from /usr/lib/compiz/libunityshell.so
   ?? () from /usr/lib/compiz/libunityshell.so
   ?? () from /usr/lib/compiz/libunityshell.so
  Title: compiz crashed with SIGSEGV in __dynamic_cast()
  UpgradeStatus: Upgraded to trusty on 2014-01-30 (26 days ago)
  UserGroups: adm autopilot cdrom debian-tor dip ftpsecure lpadmin plugdev sambashare sudo vboxusers

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