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[Christopher Townsend <christopher.townsend@xxxxxxxxxxxxx>]

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https://bugs.launchpad.net/bugs/1432231

Title:
  compiz crashed with SIGSEGV in XGetSelectionOwner()

Status in Unity:
  Confirmed
Status in unity package in Ubuntu:
  Confirmed

Bug description:
  Running updated & current Vivid, on systemd and using Intel Haswell
  video.  Crash happened using Unity Tweak Tool after clicking Window
  Manager->General->Hardware Acceleration->Texture (dropdown).

  Screen. mouse and keyboard froze for several seconds, screen flashed
  off and on,  mouse and keyboard were functional.

  ProblemType: Crash
  DistroRelease: Ubuntu 15.04
  Package: unity 7.3.1+15.04.20150227-0ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  ApportVersion: 2.16.2-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Mar 14 16:01:38 2015
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2015-03-14 (0 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150306)
  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: 0x7f04575688dc <XGetSelectionOwner+12>:	mov    0x968(%rdi),%rax
   PC (0x7f04575688dc) ok
   source "0x968(%rdi)" (0x3f8000003f4ce1ff) not located in a known VMA region (needed readable region)!
   destination "%rax" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   XGetSelectionOwner () from /usr/lib/x86_64-linux-gnu/libX11.so.6
   unity::XdndStartStopNotifierImp::OnTimeout() () from /usr/lib/compiz/libunityshell.so
   unity::glib::Source::SourceCallback(void*) () from /usr/lib/libunity-core-6.0.so.9
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  Title: compiz crashed with SIGSEGV in XGetSelectionOwner()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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