Bug 373805 - When change workspace with key combination kwin crash
Summary: When change workspace with key combination kwin crash
Status: RESOLVED DUPLICATE of bug 361236
Alias: None
Product: kwin
Classification: Unclassified
Component: general (show other bugs)
Version: 5.7.5
Platform: Gentoo Packages Linux
: NOR normal (vote)
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-12-18 08:05 UTC by Paul Chany
Modified: 2016-12-21 19:18 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:


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Description Paul Chany 2016-12-18 08:05:20 UTC
Hi,

on Gentoo linux system I am running KDE Plasma 5.

Frequently when I change workspace Kwin crashes.
The key combination for changing workspace is Windows key + Right Arrow ( or Left Arrow ).

Best, from Pal
Comment 1 Martin Flöser 2016-12-18 08:54:14 UTC
Please attach a backtrace of the crash.
Comment 2 Paul Chany 2016-12-18 13:41:49 UTC
(In reply to Martin Gräßlin from comment #1)
> Please attach a backtrace of the crash.

Whenever this crash happen I get a bug icon on Taskbar so I can start with it a dialog for sending Bug report.

In this dialog it stands that that I have not installed some files for making good backtraces. But I have installed those files! I located these on my filesystem out here.

Moreover, I just tried to reproduce this crash of Kwin, but get another crash, this time of Plasma 5. In this case the Dialog of Bug Report is the same when Kwin crashed. The reproduced backtrace is useless.
Comment 3 Paul Chany 2016-12-19 20:11:52 UTC
I just have a crash, but this time the Plasma did the chrash.
Here is the backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8b5333a800 (LWP 4398))]

Thread 9 (Thread 0x7f8b3fdd0700 (LWP 4402)):
#0  0x00007f8b4c6a546d in poll () from /lib64/libc.so.6
#1  0x00007f8b516d3192 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f8b516d4f7f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f8b41f46079 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f8b4d26fd1c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f8b3e571700 (LWP 4403)):
#0  0x00007f8b4c6a546d in poll () from /lib64/libc.so.6
#1  0x00007f8b4576606c in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b4576617c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b4d460b3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f8b4d4128aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f8b4d26b564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8b4db65255 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x00007f8b4d26fd1c in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f8b3cb2a700 (LWP 4454)):
#0  0x00007f8b4c6bab4f in ?? () from /lib64/libc.so.6
#1  0x00007f8b4c6a1442 in read () from /lib64/libc.so.6
#2  0x00007f8b457a8920 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b45765b1c in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b45766010 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8b4576617c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#6  0x00007f8b4d460b3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8b4d4128aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8b4d26b564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#9  0x00007f8b5057d205 in ?? () from /usr/lib64/libQt5Qml.so.5
#10 0x00007f8b4d26fd1c in ?? () from /usr/lib64/libQt5Core.so.5
#11 0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#12 0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f8b2e831700 (LWP 4530)):
#0  0x00007f8b4d30deb0 in ?? () from /usr/lib64/libQt5Core.so.5
#1  0x00007f8b4d30def9 in QElapsedTimer::clockType() () from /usr/lib64/libQt5Core.so.5
#2  0x00007f8b4d30df19 in QElapsedTimer::isMonotonic() () from /usr/lib64/libQt5Core.so.5
#3  0x00007f8b4d45f31e in QTimerInfoList::repairTimersIfNeeded() () from /usr/lib64/libQt5Core.so.5
#4  0x00007f8b4d45f393 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f8b4d46069c in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8b4d460775 in ?? () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8b457655ad in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#8  0x00007f8b45765f98 in ?? () from /usr/lib64/libglib-2.0.so.0
#9  0x00007f8b4576617c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#10 0x00007f8b4d460b3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#11 0x00007f8b4d4128aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#12 0x00007f8b4d26b564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#13 0x00007f8b5057d205 in ?? () from /usr/lib64/libQt5Qml.so.5
#14 0x00007f8b4d26fd1c in ?? () from /usr/lib64/libQt5Core.so.5
#15 0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#16 0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f8b2cb59700 (LWP 4536)):
#0  0x00007f8b4ba1d00f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8b52d9da14 in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f8b52d9da59 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f8a9f3e6700 (LWP 4606)):
#0  0x00007f8b4d268aa6 in QMutex::unlock() () from /usr/lib64/libQt5Core.so.5
#1  0x00007f8b4d4608dd in ?? () from /usr/lib64/libQt5Core.so.5
#2  0x00007f8b457655ad in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b45765f98 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b4576617c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8b4d460b3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8b4d4128aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8b4d26b564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8b50f02dc6 in ?? () from /usr/lib64/libQt5Quick.so.5
#9  0x00007f8b4d26fd1c in ?? () from /usr/lib64/libQt5Core.so.5
#10 0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f8a93a3d700 (LWP 4633)):
#0  0x00007f8b457a9d80 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f8b45764fa0 in g_main_context_acquire () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b45765f25 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b4576617c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b4d460b3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f8b4d4128aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8b4d26b564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8a948ecf37 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#8  0x00007f8b4d26fd1c in ?? () from /usr/lib64/libQt5Core.so.5
#9  0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f8a860eb700 (LWP 4973)):
#0  0x00007f8b4c6a144d in read () from /lib64/libc.so.6
#1  0x00007f8b457a8920 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8b45765b1c in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8b45766010 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8b4576617c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8b4d460b3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f8b4d4128aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f8b4d26b564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f8b5057d205 in ?? () from /usr/lib64/libQt5Qml.so.5
#9  0x00007f8b4d26fd1c in ?? () from /usr/lib64/libQt5Core.so.5
#10 0x00007f8b4ba17444 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f8b4c6ae4cd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f8b5333a800 (LWP 4398)):
[KCrash Handler]
#6  0x00007f8b5033f368 in ?? () from /usr/lib64/libQt5Qml.so.5
#7  0x00007f8b5059e218 in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f8b505c6fcc in ?? () from /usr/lib64/libQt5Qml.so.5
#9  0x00007f8b505c7c3b in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Qml.so.5
#10 0x00007f8b4d43b760 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#11 0x00007f8b4d4a9d1c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libQt5Core.so.5
#12 0x00007f8a972530e4 in ?? () from /usr/lib64/liblegacytaskmanager.so.5
#13 0x00007f8a972539e7 in ?? () from /usr/lib64/liblegacytaskmanager.so.5
#14 0x00007f8b4d43b21c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#15 0x00007f8a9725d0d8 in LegacyTaskManager::AbstractGroupableItem::changed(QFlags<LegacyTaskManager::TaskChange>) () from /usr/lib64/liblegacytaskmanager.so.5
#16 0x00007f8b4d43b21c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#17 0x00007f8a9725d2c8 in LegacyTaskManager::Task::changed(QFlags<LegacyTaskManager::TaskChange>) () from /usr/lib64/liblegacytaskmanager.so.5
#18 0x00007f8a9723b10a in LegacyTaskManager::Task::setActive(bool) () from /usr/lib64/liblegacytaskmanager.so.5
#19 0x00007f8a9724e569 in LegacyTaskManager::LegacyTaskManager::activeWindowChanged(unsigned long long) () from /usr/lib64/liblegacytaskmanager.so.5
#20 0x00007f8b4d43b882 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#21 0x00007f8b4fd14b92 in KWindowSystem::activeWindowChanged(unsigned long long) () from /usr/lib64/libKF5WindowSystem.so.5
#22 0x00007f8b3cf4a6eb in ?? () from /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#23 0x00007f8b4d411a4c in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () from /usr/lib64/libQt5Core.so.5
#24 0x00007f8b41f442b4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /usr/lib64/libQt5XcbQpa.so.5
#25 0x00007f8b41f464a3 in QXcbConnection::processXcbEvents() () from /usr/lib64/libQt5XcbQpa.so.5
#26 0x00007f8b4d43c7aa in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#27 0x00007f8b4dd6a59c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#28 0x00007f8b4dd6ecb0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#29 0x00007f8b4d413d20 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#30 0x00007f8b4d415f83 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#31 0x00007f8b4d460ab3 in ?? () from /usr/lib64/libQt5Core.so.5
#32 0x00007f8b45765ded in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#33 0x00007f8b457660d0 in ?? () from /usr/lib64/libglib-2.0.so.0
#34 0x00007f8b4576617c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#35 0x00007f8b4d460b27 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#36 0x00007f8b4d4128aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#37 0x00007f8b4d41a49c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#38 0x000000000041acf8 in ?? ()
#39 0x00007f8b4c5e5620 in __libc_start_main () from /lib64/libc.so.6
#40 0x000000000041b0b9 in _start ()
Comment 4 Paul Chany 2016-12-21 16:44:09 UTC
Here is another crash, this tim it is Kwin crashed.
The backtrace ( probably is useless ):
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9fc1f38800 (LWP 4297))]

Thread 5 (Thread 0x7f9fc11f0700 (LWP 4365)):
#0  0x00007f9fcd4af46d in poll () from /lib64/libc.so.6
#1  0x00007f9fcfbc9192 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f9fcfbcaf7f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f9fc1c9c079 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f9fce079d1c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9fd04f7444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9fcd4b84cd in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f9fbb841700 (LWP 4366)):
#0  0x00007ffc65ff1929 in ?? ()
#1  0x00007ffc65ff1b32 in clock_gettime ()
#2  0x00007f9fcd4c51c6 in clock_gettime () from /lib64/libc.so.6
#3  0x00007f9fce117f53 in ?? () from /usr/lib64/libQt5Core.so.5
#4  0x00007f9fce268f89 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9fce26824b in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9fce268a8d in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f9fce21c8aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#8  0x00007f9fce075564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#9  0x00007f9fcfdfa255 in ?? () from /usr/lib64/libQt5DBus.so.5
#10 0x00007f9fce079d1c in ?? () from /usr/lib64/libQt5Core.so.5
#11 0x00007f9fd04f7444 in start_thread () from /lib64/libpthread.so.0
#12 0x00007f9fcd4b84cd in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f9fb90e3700 (LWP 4410)):
#0  0x00007f9fce268696 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () from /usr/lib64/libQt5Core.so.5
#1  0x00007f9fce268a8d in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f9fce21c8aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#3  0x00007f9fce075564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#4  0x00007f9fd5407205 in ?? () from /usr/lib64/libQt5Qml.so.5
#5  0x00007f9fce079d1c in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9fd04f7444 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f9fcd4b84cd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f9fabd46700 (LWP 4472)):
#0  0x00007f9fcd4b1163 in select () from /lib64/libc.so.6
#1  0x00007f9fce266e61 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f9fce26854e in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () from /usr/lib64/libQt5Core.so.5
#3  0x00007f9fce268a8d in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f9fce21c8aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9fce075564 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9fd5407205 in ?? () from /usr/lib64/libQt5Qml.so.5
#7  0x00007f9fce079d1c in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007f9fd04f7444 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9fcd4b84cd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f9fc1f38800 (LWP 4297)):
[KCrash Handler]
#6  0x00007f9fd53f1d00 in QQmlBinding::write(QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib64/libQt5Qml.so.5
#7  0x00007f9fd53f335a in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f9fd53fcf49 in ?? () from /usr/lib64/libQt5Qml.so.5
#9  0x00007f9fd538470b in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () from /usr/lib64/libQt5Qml.so.5
#10 0x00007f9fd53847c7 in QQmlComponentPrivate::completeCreate() () from /usr/lib64/libQt5Qml.so.5
#11 0x00007f9fd5387420 in QQmlComponent::create(QQmlContext*) () from /usr/lib64/libQt5Qml.so.5
#12 0x00007f9fb910157b in ?? () from /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#13 0x00007f9fd6be51e8 in ?? () from /usr/lib64/libkwin.so.5
#14 0x00007f9fd6ac25b9 in KWin::Client::createDecoration(QRect const&) () from /usr/lib64/libkwin.so.5
#15 0x00007f9fd6ac2feb in KWin::Client::updateDecoration(bool, bool) () from /usr/lib64/libkwin.so.5
#16 0x00007f9fd6b22edf in KWin::Client::manage(unsigned int, bool) () from /usr/lib64/libkwin.so.5
#17 0x00007f9fd6aa32a5 in KWin::Workspace::createClient(unsigned int, bool) () from /usr/lib64/libkwin.so.5
#18 0x00007f9fd6b10555 in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () from /usr/lib64/libkwin.so.5
#19 0x00007f9fce21ba4c in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () from /usr/lib64/libQt5Core.so.5
#20 0x00007f9fc1c9a2b4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /usr/lib64/libQt5XcbQpa.so.5
#21 0x00007f9fc1c9c4a3 in QXcbConnection::processXcbEvents() () from /usr/lib64/libQt5XcbQpa.so.5
#22 0x00007f9fce2467aa in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#23 0x00007f9fceab659c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#24 0x00007f9fceabacb0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#25 0x00007f9fce21dd20 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#26 0x00007f9fce21ff83 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#27 0x00007f9fce268942 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#28 0x00007f9fc1d0200d in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#29 0x00007f9fce21c8aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#30 0x00007f9fce22449c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#31 0x00007f9fd6ee261b in kdemain () from /usr/lib64/libkdeinit5_kwin_x11.so
#32 0x00007f9fcd3ef620 in __libc_start_main () from /lib64/libc.so.6
#33 0x0000000000400c69 in _start ()
Comment 5 Paul Chany 2016-12-21 16:45:16 UTC
(In reply to Paul Chany from comment #0)
> Hi,
> 
> on Gentoo linux system I am running KDE Plasma 5.
> 
> Frequently when I change workspace Kwin crashes.
> The key combination for changing workspace is Windows key + Right Arrow ( or
> Left Arrow ).
> 
> Best, from Pal

or Up Arrow or Down Arrow key on keyboard.
Comment 6 Christoph Feck 2016-12-21 18:45:38 UTC
Crash from comment #4 is bug 361236.

As a workaround, use Breeze as the window decoration.
Comment 7 Martin Flöser 2016-12-21 19:18:22 UTC
Setting as duplicate

*** This bug has been marked as a duplicate of bug 361236 ***