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[Launchpad Bug Tracker <862998@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gnome-desktop3 - 3.2.0-0ubuntu4.1

---------------
gnome-desktop3 (3.2.0-0ubuntu4.1) oneiric-proposed; urgency=low

  * debian/patches/02_refuse_to_break_GL_compositors.patch:
    - Add extra paranoid checks to fail gracefully in the case of errors in
      check_gl_texture_size.  Eliminates (otherwise harmless) crashes.
      (LP: #862161, LP: #862998, LP: #861804, LP: #861548)
    - Wait for check_gl_texture_size no longer than 500msec.  Ensures that
      this check will not block the desktop, as in (LP: #871188).
  * Remove debian-changes patch which accidentally reverted the change meant
    to be applied in 3.2.0-0ubuntu4.
 -- Christopher James Halse Rogers <raof@xxxxxxxxxx>   Tue, 11 Oct 2011 10:30:22 +1100

** Changed in: gnome-desktop3 (Ubuntu)
       Status: Fix Committed => Fix Released

** Changed in: gnome-desktop3 (Ubuntu Oneiric)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/862998

Title:
  check_gl_texture_size crashed with SIGSEGV in xcb_writev()

Status in “gnome-desktop3” package in Ubuntu:
  Fix Released
Status in “gnome-desktop3” source package in Oneiric:
  Fix Released

Bug description:
  occurs when try to reset unity

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: libgnome-desktop-3-2 3.2.0-0ubuntu2
  Uname: Linux 3.0.4-030004-generic i686
  ApportVersion: 1.23-0ubuntu2
  Architecture: i386
  Date: Fri Sep 30 13:16:34 2011
  ExecutablePath: /usr/lib/gnome-desktop3/check_gl_texture_size
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  ProcCmdline: /usr/lib/gnome-desktop3/check_gl_texture_size
  ProcEnviron:
   
  SegvAnalysis:
   Segfault happened at: 0xb74f1678 <xcb_writev+40>:	mov    (%esi),%eax
   PC (0xb74f1678) ok
   source "(%esi)" (0x00000000) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gnome-desktop3
  StacktraceTop:
   xcb_writev () from /usr/lib/i386-linux-gnu/libxcb.so.1
   _XSend () from /usr/lib/i386-linux-gnu/libX11.so.6
   _XReply () from /usr/lib/i386-linux-gnu/libX11.so.6
   ?? () from /usr/lib/i386-linux-gnu/mesa/libGL.so.1
   ?? () from /usr/lib/i386-linux-gnu/mesa/libGL.so.1
  Title: check_gl_texture_size crashed with SIGSEGV in xcb_writev()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare
  XsessionErrors:
   (nautilus:1981): Gtk-CRITICAL **: gtk_action_set_visible: assertion `GTK_IS_ACTION (action)' failed
   (nautilus:1981): Gtk-CRITICAL **: gtk_action_set_visible: assertion `GTK_IS_ACTION (action)' failed
   (gwibber-service:2166): libindicate-WARNING **: Menu being changed when the indicator is visible.  Listeners will NOT be notified of this change.

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