signon-ui crashed with SIGSEGV in QXcbWindow::updateNetWmUserTime()

[Tony Themelis]

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: signon-ui 0.15daily13.06.12-0ubuntu1
ProcVersionSignature: Ubuntu 3.10.0-2.11-generic 3.10.0
Uname: Linux 3.10.0-2-generic x86_64
ApportVersion: 2.10.2-0ubuntu4
Architecture: amd64
Date: Sat Jul 13 11:31:32 2013
ExecutablePath: /usr/bin/signon-ui
InstallationDate: Installed on 2013-07-13 (0 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130712)
MarkForUpload: True
ProcCmdline: /usr/bin/signon-ui
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=en_US
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7f64501d18cb: mov 0x28(%rdi),%r12d
 PC (0x7f64501d18cb) ok
 source "0x28(%rdi)" (0x00000028) not located in a known VMA region (needed readable region)!
 destination "%r12d" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: signon-ui
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
 ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
 ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
 ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
 QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
Title: signon-ui crashed with SIGSEGV in QObject::event()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 QXcbWindow::updateNetWmUserTime (this=0x0, timestamp=870365) at qxcbwindow.cpp:1084
 QXcbKeyboard::handleKeyPressEvent (this=0x1acdbd0, window=0x0, event=0x7f6448003aa0) at qxcbkeyboard.cpp:1176
 QXcbConnection::handleXcbEvent (this=this@entry=0x1abb700, event=event@entry=0x7f6448003aa0) at qxcbconnection.cpp:784
 QXcbConnection::processXcbEvents (this=0x1abb700) at qxcbconnection.cpp:1076
 QObject::event (this=0x1abb700, e=<optimized out>) at kernel/qobject.cpp:1070

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.