Application: plasmashell (5.6.5)
 (Compiled from sources)
Qt Version: 5.6.1
Frameworks Version: 5.23.0
Operating System: Linux 4.4.6-gentoo x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
- What I was doing when the application crashed:
Disabilito e riabilito il compositor e quando avvio le finester ci sono problemi di rendering in generale , ad esempio finestra focus e il resto nero , completamente nero
- Unusual behavior I noticed:

- Custom settings of the application:

solo qualche effetto qua e la' . niente di che

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9bb3980740 (LWP 4182))]

Thread 13 (Thread 0x7f9ba1fdb700 (LWP 4184)):
#0  0x00007f9bae2ef14d in poll () from /lib64/libc.so.6
#1  0x00007f9bb23488f2 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f9bb234a6df in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f9ba496cf89 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f9b9bfff700 (LWP 4185)):
#0  0x00007f9bae2eb11d in read () from /lib64/libc.so.6
#1  0x00007f9baa37f550 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9baa33c99c in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9baa33ce90 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f9baa33cffc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f9baeb985dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9baeb4ac4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f9bae9a6154 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f9bb3ab1235 in ?? () from /usr/lib64/libQt5DBus.so.5
#9  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#10 0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f9b9a9c9700 (LWP 4222)):
#0  0x00007f9baa3809c4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f9baa33c420 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9baa33ce18 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9baa33cffc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f9baeb985dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9baeb4ac4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9bae9a6154 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f9bb11e5a65 in ?? () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#9  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f9b8b3f7700 (LWP 4223)):
#0  0x00007f9bae2ef14d in poll () from /lib64/libc.so.6
#1  0x00007f9baa33ceec in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9baa33cffc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9baeb985dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f9baeb4ac4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9bae9a6154 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9bb11e5a65 in ?? () from /usr/lib64/libQt5Qml.so.5
#7  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f9b89577700 (LWP 4224)):
#0  0x00007f9baa3809c4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f9baa33be8e in g_main_context_acquire () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9baa33cda5 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9baa33cffc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f9baeb985dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9baeb4ac4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9bae9a6154 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f9bb11e5a65 in ?? () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#9  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f9b83bef700 (LWP 4225)):
#0  0x00007f9badafe00f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9bb33cf884 in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f9bb33cf8c9 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f9b80fb4700 (LWP 4226)):
#0  0x00007f9bae2ef14d in poll () from /lib64/libc.so.6
#1  0x00007f9baa33ceec in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9baa33cffc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9baeb985dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f9baeb4ac4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9bae9a6154 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007f9bb1b6be86 in ?? () from /usr/lib64/libQt5Quick.so.5
#7  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f9af7fff700 (LWP 4227)):
#0  0x00007f9badafe00f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9bae9aaeda in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f9bb1bdc6b5 in ?? () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f9bb1bdca9a in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f9aebf69700 (LWP 4240)):
#0  0x00007f9badafe00f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9bae9aaeda in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f9bb1bdc6b5 in ?? () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f9bb1bdca9a in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f9aeaf67700 (LWP 4243)):
#0  0x00007f9badafe00f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9bae9aaeda in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f9bb1bdc6b5 in ?? () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f9bb1bdca9a in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f9aeb768700 (LWP 4369)):
#0  0x00007f9badafe00f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9bae9aaeda in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f9bb1bdc6b5 in ?? () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f9bb1bdca9a in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f9aea23b700 (LWP 4516)):
#0  0x00007f9badafe00f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9bae9aaeda in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f9bb1bdc6b5 in ?? () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f9bb1bdca9a in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f9bae9aa88c in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007f9badaf8444 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9bae2f812d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f9bb3980740 (LWP 4182)):
[KCrash Handler]
#6  0x00007f9bb115a640 in QQmlExpression::QQmlExpression(QQmlScriptString const&, QQmlContext*, QObject*, QObject*) () from /usr/lib64/libQt5Qml.so.5
#7  0x00007f9bb1b476f7 in ?? () from /usr/lib64/libQt5Quick.so.5
#8  0x00007f9bb11fb5c5 in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib64/libQt5Qml.so.5
#9  0x00007f9bb11fcd6c in QSequentialAnimationGroupJob::activateCurrentAnimation(bool) () from /usr/lib64/libQt5Qml.so.5
#10 0x00007f9bb11fce4c in QSequentialAnimationGroupJob::uncontrolledAnimationFinished(QAbstractAnimationJob*) () from /usr/lib64/libQt5Qml.so.5
#11 0x00007f9bb11faa9f in QAbstractAnimationJob::finished() () from /usr/lib64/libQt5Qml.so.5
#12 0x00007f9bb11fb6a8 in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib64/libQt5Qml.so.5
#13 0x00007f9bb1b8db89 in QQuickAnimatorProxyJob::setWindow(QQuickWindow*) () from /usr/lib64/libQt5Quick.so.5
#14 0x00007f9baeb730ec in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#15 0x00007f9bb1bef522 in QQuickItem::windowChanged(QQuickWindow*) () from /usr/lib64/libQt5Quick.so.5
#16 0x00007f9bb1bfd53f in QQuickItemPrivate::derefWindow() () from /usr/lib64/libQt5Quick.so.5
#17 0x00007f9bb1bfe777 in QQuickItem::setParentItem(QQuickItem*) () from /usr/lib64/libQt5Quick.so.5
#18 0x00007f9bb1bfef46 in QQuickItem::~QQuickItem() () from /usr/lib64/libQt5Quick.so.5
#19 0x00007f9bb1c1a106 in ?? () from /usr/lib64/libQt5Quick.so.5
#20 0x00007f9baeb74698 in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#21 0x00007f9bb1bfb1db in QQuickItem::event(QEvent*) () from /usr/lib64/libQt5Quick.so.5
#22 0x00007f9baf3e85dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#23 0x00007f9baf3ecd00 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#24 0x00007f9baeb4c0b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#25 0x00007f9baeb4e2e3 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#26 0x00007f9baeb98553 in ?? () from /usr/lib64/libQt5Core.so.5
#27 0x00007f9baa33cc6d in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#28 0x00007f9baa33cf50 in ?? () from /usr/lib64/libglib-2.0.so.0
#29 0x00007f9baa33cffc in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#30 0x00007f9baeb985c7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#31 0x00007f9baeb4ac4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#32 0x00007f9baeb5270c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#33 0x000000000041af0e in ?? ()
#34 0x00007f9bae22f620 in __libc_start_main () from /lib64/libc.so.6
#35 0x000000000041b079 in _start ()

Possible duplicates by query: bug 368876, bug 368223, bug 368185, bug 366054, bug 365916.

Reported using DrKonqi