[kde] [Bug 343844] New: Kwin crashes with Xinerama and 3 monitors

[Alexander Nestorov]

https://bugs.kde.org/show_bug.cgi?id=343844

            Bug ID: 343844
           Summary: Kwin crashes with Xinerama and 3 monitors
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: alexandernst at gmail.com

Application: kwin_x11 (5.2.0)

Qt Version: 5.4.0
Operating System: Linux 3.18.5-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
I configured nvidia-settings to use Xinerama and restarted. Then I trried to
login, but the progressbar on the login screen gets around 90% when kwin
crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f611dca1840 (LWP 5138))]

Thread 2 (Thread 0x7f6116a31700 (LWP 5142)):
#0  0x00007f612cd79c78 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/usr/lib/libpthread.so.0
#1  0x00007f6133f92688 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/libQt5Core.so.5
#2  0x00007f6133f8e68c in ?? () from /usr/lib/libQt5Core.so.5
#3  0x00007f6133f915ee in ?? () from /usr/lib/libQt5Core.so.5
#4  0x00007f612cd74314 in start_thread () from /usr/lib/libpthread.so.0
#5  0x00007f613597124d in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f611dca1840 (LWP 5138)):
[KCrash Handler]
#5  0x00007f6133cdb1d0 in xcb_setup_vendor_end () from /usr/lib/libxcb.so.1
#6  0x00007f6133cdb229 in xcb_setup_pixmap_formats_iterator () from
/usr/lib/libxcb.so.1
#7  0x00007f6133cdb269 in xcb_setup_roots_iterator () from /usr/lib/libxcb.so.1
#8  0x00007f613547c4f8 in ?? () from /usr/lib/libkwin.so.5
#9  0x00007f6135484451 in ?? () from /usr/lib/libkwin.so.5
#10 0x00007f6135c2fa76 in ?? () from /usr/lib/libkdeinit5_kwin_x11.so
#11 0x00007f61341aacca in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib/libQt5Core.so.5
#12 0x00007f6134fc1c42 in KSelectionOwner::Private::claimSucceeded() () from
/usr/lib/libKF5WindowSystem.so.5
#13 0x00007f6134fc24c1 in KSelectionOwner::filterEvent(void*) () from
/usr/lib/libKF5WindowSystem.so.5
#14 0x00007f61341786b0 in
QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) ()
from /usr/lib/libQt5Core.so.5
#15 0x00007f611da8831d in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#16 0x00007f611da8981b in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#17 0x00007f61341ac4ba in QObject::event(QEvent*) () from
/usr/lib/libQt5Core.so.5
#18 0x00007f6134a59d8c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/libQt5Widgets.so.5
#19 0x00007f6134a5f370 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/libQt5Widgets.so.5
#20 0x00007f613417ba9b in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /usr/lib/libQt5Core.so.5
#21 0x00007f613417dadb in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#22 0x00007f61341d05d2 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQt5Core.so.5
#23 0x00007f611dadd4ad in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#24 0x00007f6134179532 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQt5Core.so.5
#25 0x00007f6134180f0c in QCoreApplication::exec() () from
/usr/lib/libQt5Core.so.5
#26 0x00007f6135c30adb in kdemain () from /usr/lib/libkdeinit5_kwin_x11.so
#27 0x00007f61358a9040 in __libc_start_main () from /usr/lib/libc.so.6
#28 0x00000000004007ae in _start ()

Reported using DrKonqi

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