[Bug 64699] KDE systemsettings crashes when I click on "Desktop"

[lcampagn]

Public bug reported:

Binary package hint: kde-systemsettings

Roughly half of the time I click on the "desktop" icon in systemsettings, I get a crash.
Here's some command line output:

$ systemsettings
adding Background /usr/share/applications/kde/background.desktop
adding Screen Saver /usr/share/applications/kde/screensaver.desktop
ScimInputContextPlugin()
adding Behavior /usr/share/applications/kde/desktopbehavior.desktop
adding Multiple Desktops /usr/share/applications/kde/desktop.desktop
adding Splash Screen /usr/share/applications/kde/ksplashthememgr.desktop
adding Window Behavior /usr/share/applications/kde/kwinoptions.desktop
adding Window-Specific Settings /usr/share/applications/kde/kwinrules.desktop
X Error: BadMatch (invalid parameter attributes) 8
  Major opcode:  1
  Minor opcode:  0
  Resource id:  0x36002b5
X Error: BadWindow (invalid Window parameter) 3
  Major opcode:  3
  Minor opcode:  0
  Resource id:  0x36005e9
KCrash: Application 'systemsettings' crashing...


..and here's a backtrace:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 46912570510688 (LWP 11550)]
0x00002aaaadd63500 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
(gdb) backtr
#0  0x00002aaaadd63500 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#1  0x00002aaaac6ef4da in QWidget::create () from /usr/lib/libqt-mt.so.3
#2  0x00002aaab0060f7f in KSWidget::KSWidget () from /usr/lib/kde3/kcm_screensaver.so
#3  0x00002aaab0065198 in KScreenSaver::slotPreviewExited () from /usr/lib/kde3/kcm_screensaver.so
#4  0x00002aaab006733d in KScreenSaver::findSavers () from /usr/lib/kde3/kcm_screensaver.so
#5  0x00002aaab006a049 in KScreenSaver::qt_invoke () from /usr/lib/kde3/kcm_screensaver.so
#6  0x00002aaaac78d79e in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#7  0x00002aaaac78e32e in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#8  0x00002aaaacafca40 in QTimer::timeout () from /usr/lib/libqt-mt.so.3
#9  0x00002aaaac7b1005 in QTimer::event () from /usr/lib/libqt-mt.so.3
#10 0x00002aaaac726c34 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#11 0x00002aaaac726ea4 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#12 0x00002aaaabac5f6e in KApplication::notify () from /usr/lib/libkdecore.so.4
#13 0x00002aaaac6b836c in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#14 0x00002aaaac71917e in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#15 0x00002aaaac6cbb85 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#16 0x00002aaaac73eaca in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#17 0x00002aaaac73e9d3 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#18 0x00002aaaac7258a0 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#19 0x000000000041a699 in QPtrDict<QStringList>::deleteItem ()
#20 0x00002aaaaec5249b in __libc_start_main () from /lib/libc.so.6

** Affects: kde-systemsettings (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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KDE systemsettings crashes when I click on "Desktop"
https://launchpad.net/bugs/64699