[Bug 174931] New: kwin crashes when using xrandr to configure dual-head

[Dan Bohr]

http://bugs.kde.org/show_bug.cgi?id=174931

           Summary: kwin crashes when using xrandr to configure dual-head
           Product: kde
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: dualhead
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: danbohr at gmail.com


Version:            (using KDE 4.1.2)
OS:                Linux
Installed from:    Ubuntu Packages

The installation is a Kubuntu Interpid Ibex, 64 bit kernel on a Lenovo X61s
with all updates from the Kubuntu repositories.

I can trigger the crash by issuing
xrandr --output LVDS --mode 1024x768 --pos 0x0 --output VGA  --mode 1024x768
--pos 1024x0

which switches on the second monitor correctly, but also makes KWin crash.


Here is the (full) backtrace from the KDE crash handler:

Application: KWin (kwin), signal SIGABRT
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[Thread debugging using libthread_db enabled]
[New Thread 0x7f9cb511c700 (LWP 7506)]
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[KCrash handler]
#5  0x00007f9cb4931fd5 in raise () from /lib/libc.so.6
#6  0x00007f9cb4933b43 in abort () from /lib/libc.so.6
#7  0x00007f9cb3c916b5 in qt_message_output () from /usr/lib/libQtCore.so.4
#8  0x00007f9cb3c917fd in qFatal () from /usr/lib/libQtCore.so.4
#9  0x00007f9cb4cdc747 in ?? () from /usr/lib/libkdeinit4_kwin.so
#10 0x00007f9cb4cdc98c in ?? () from /usr/lib/libkdeinit4_kwin.so
#11 0x00007f9cb4cdcdc1 in ?? () from /usr/lib/libkdeinit4_kwin.so
#12 0x00007f9cb4cdd094 in ?? () from /usr/lib/libkdeinit4_kwin.so
#13 0x00007f9cb4ce52d2 in ?? () from /usr/lib/libkdeinit4_kwin.so
#14 0x00007f9cb4ce6638 in ?? () from /usr/lib/libkdeinit4_kwin.so
#15 0x00007f9cb4c9778d in ?? () from /usr/lib/libkdeinit4_kwin.so
#16 0x00007f9cb3d96134 in QMetaObject::activate ()
   from /usr/lib/libQtCore.so.4
#17 0x00007f9cb2ee963e in QDesktopWidget::resized ()
   from /usr/lib/libQtGui.so.4
#18 0x00007f9cb29d0fab in QApplication::x11ProcessEvent ()
   from /usr/lib/libQtGui.so.4
#19 0x00007f9cb29f82f4 in ?? () from /usr/lib/libQtGui.so.4
#20 0x00007f9caffc3d3b in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#21 0x00007f9caffc750d in ?? () from /usr/lib/libglib-2.0.so.0
#22 0x00007f9caffc76cb in g_main_context_iteration ()
   from /usr/lib/libglib-2.0.so.0
#23 0x00007f9cb3daa15f in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#24 0x00007f9cb29f7a9f in ?? () from /usr/lib/libQtGui.so.4
#25 0x00007f9cb3d80682 in QEventLoop::processEvents ()
   from /usr/lib/libQtCore.so.4
#26 0x00007f9cb3d8080d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#27 0x00007f9cb3d82cbd in QCoreApplication::exec ()
   from /usr/lib/libQtCore.so.4
#28 0x00007f9cb4cb0731 in kdemain () from /usr/lib/libkdeinit4_kwin.so
#29 0x00007f9cb491d466 in __libc_start_main () from /lib/libc.so.6
#30 0x0000000000400659 in _start ()
#0  0x00007f9cb49a7621 in nanosleep () from /lib/libc.so.6


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