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List:       kwin
Subject:    [Bug 231824] New: Kwin crashing Signal:11 (Segmentation fault) while
From:       "Jason 'vanRijn' Kasper" <vR () movingparts ! net>
Date:       2010-03-22 19:22:18
Message-ID: bug-231824-4790 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=231824

           Summary: Kwin crashing Signal:11 (Segmentation fault) while
                    swiching from two monitors to three monitors
           Product: kwin
           Version: 4.3.2
          Platform: Fedora RPMs
        OS/Version: Linux
            Status: NEW
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: kwin@kde.org
        ReportedBy: vR@movingparts.net


Version:            (using KDE 4.3.2)
OS:                Linux
Installed from:    Fedora RPMs

This is a bug we found internally at VMware (internal bug #536494), while
testing KWin with multiple monitors.

Fedora 12 64-bit KDE-KWIN (version 4.3.2)

Steps to reproduce:
1. Power on Fedora 12 with KDE-KWIN
2. Switch to full screen and add a monitor ( 1 mon to 2 mons)
3. add a monitor ( 2 mons to 3 mons)
4. add a monitor ( 3 mons to 4 mons)
5. add a monitor ( 4 mons to 1 mons)
6. add a monitor ( 1 mons to 2 mons)
7. add a monitor ( 2 mons to 3 mons)
At this step, KDE crash handler window appears with KWin crash information:
This is 100% reproducible but only at step 7 above.

Here is the crash information:
------------------------------

Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#5 0x00000039f48087c9 in Kephal::Screen::geom() () from
/usr/lib64/libkephal.so.4
#6 0x00000039f4808d6d in Kephal::ScreenUtils::screenGeometry(int) () from
/usr/lib64/libkephal.so.4
#7 0x00000039f327fdf0 in ?? () from /usr/lib64/libkdeinit4_kwin.so
#8 0x00000039f3281a0b in ?? () from /usr/lib64/libkdeinit4_kwin.so
#9 0x00000039f322c691 in KSelectionOwner::genericReply(unsigned long, unsigned
long, unsigned long) () from /usr/lib64/libkdeinit4_kwin.so
#10 0x00000039ef35408c in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib64/libQtCore.so.4
#11 0x00000039f481e091 in Kephal::Screens::screenRemoved(int) () from
/usr/lib64/libkephal.so.4
#12 0x00000039f481e4cf in ?? () from /usr/lib64/libkephal.so.4
#13 0x00000039ef35408c in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib64/libQtCore.so.4
#14 0x00000039f481fd91 in ?? () from /usr/lib64/libkephal.so.4
#15 0x00000039f4820147 in ?? () from /usr/lib64/libkephal.so.4
#16 0x00000039eda22e84 in ?? () from /usr/lib64/libQtDBus.so.4
#17 0x00000039eda2a60f in ?? () from /usr/lib64/libQtDBus.so.4
#18 0x00000039ef34e401 in QObject::event(QEvent*) () from
/usr/lib64/libQtCore.so.4
#19 0x00000039f038f65c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQtGui.so.4
#20 0x00000039f03968ce in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQtGui.so.4
#21 0x00000039f2c11786 in KApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libkdeui.so.5
#22 0x00000039ef33ee6c in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /usr/lib64/libQtCore.so.4
#23 0x00000039ef33fa42 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#24 0x00000039ef367573 in ?? () from /usr/lib64/libQtCore.so.4
#25 0x00000039e4a3922e in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#26 0x00000039e4a3cc18 in ?? () from /lib64/libglib-2.0.so.0
#27 0x00000039e4a3cd3a in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#28 0x00000039ef3671e6 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQtCore.so.4
#29 0x00000039f042200e in ?? () from /usr/lib64/libQtGui.so.4
#30 0x00000039ef33d772 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQtCore.so.4
#31 0x00000039ef33db44 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQtCore.so.4
#32 0x00000039ef33fcd9 in QCoreApplication::exec() () from
/usr/lib64/libQtCore.so.4
#33 0x00000039f3242f54 in kdemain () from /usr/lib64/libkdeinit4_kwin.so
#34 0x00000039e2e1eb1d in __libc_start_main () from /lib64/libc.so.6
#35 0x00000000004007a9 in _start ()

Thanks!! =:)

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