https://bugs.kde.org/show_bug.cgi?id=374606

            Bug ID: 374606
           Summary: Kwin crash when using multimedia related applications.
                    Screen goes blurry. Never happens when using Xrandr.
           Product: kwin
           Version: 5.8.5
          Platform: Neon Packages
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kwin-bugs-n...@kde.org
          Reporter: prince.re...@gmail.com
  Target Milestone: ---

Application: kwin_x11 (5.8.5)

Qt Version: 5.7.0
Frameworks Version: 5.29.0
Operating System: Linux 4.9.0-040900-generic x86_64
Distribution: KDE neon User Edition 5.8

-- Information about the crash:
- What I was doing when the application crashed: When using certain multimedia
application like wine o webcam applications

- Unusual behavior I noticed: Screen becomes blurry and buggy. It never happens
when using XRanrar

- Custom settings of the application:

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3d8f31e900 (LWP 15991))]

Thread 9 (Thread 0x7f3d4a21b700 (LWP 16799)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3d8cac5a4b in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3d88156eed in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f3d881577c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f3d8cac4b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d4a21b700) at
pthread_create.c:333
#6  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f3d74acf700 (LWP 16632)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3d8cac5a4b in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3d88156eed in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f3d881577c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f3d8cac4b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d74acf700) at
pthread_create.c:333
#6  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f3d49750700 (LWP 16629)):
#0  0x00007f3d8ee0fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3d8cceb60a in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3d8ccecee8 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3d8cc9acea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3d8cabffb4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3d87c8c675 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f3d8cac4b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d49750700) at
pthread_create.c:333
#8  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f3d40e1d700 (LWP 15999)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3d8be565c4 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f3d8be56609 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d40e1d700) at
pthread_create.c:333
#4  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f3d5a958700 (LWP 15996)):
#0  0x00007f3d8ee0fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3d8cceb60a in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3d8ccecee8 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3d8cc9acea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3d8cabffb4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3d87c8c675 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f3d8cac4b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d5a958700) at
pthread_create.c:333
#8  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f3d64950700 (LWP 15995)):
#0  0x00007f3d8ee0fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3d8cceb60a in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3d8ccecee8 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3d8cc9acea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3d8cabffb4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3d87c8c675 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f3d8cac4b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d64950700) at
pthread_create.c:333
#8  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f3d76787700 (LWP 15993)):
#0  0x00007f3d8ee0fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3d8cceb60a in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3d8ccecee8 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3d8cc9acea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3d8cabffb4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3d8f43c7a5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007f3d8cac4b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d76787700) at
pthread_create.c:333
#8  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3d784bd700 (LWP 15992)):
#0  0x00007f3d8ee0fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3d8df75c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f3d8df778d7 in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f3d79596a39 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f3d8cac4b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3d88b2f6ba in start_thread (arg=0x7f3d784bd700) at
pthread_create.c:333
#6  0x00007f3d8ee1b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3d8f31e900 (LWP 15991)):
[KCrash Handler]
#6  0x0000000100000000 in ?? ()
#7  0x00007f3d8cccdcd0 in QObject::connect(QObject const*, char const*, QObject
const*, char const*, Qt::ConnectionType) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f3d8be97437 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#9  0x00007f3d8be974ff in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#10 0x00007f3d8be97792 in QScriptEngine::newQObject(QObject*,
QScriptEngine::ValueOwnership, QFlags<QScriptEngine::QObjectWrapOption> const&)
() from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#11 0x00007f3d8ea0b67c in ?? () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#12 0x00007f3d8be979f5 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#13 0x00007f3d8bebeaf3 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#14 0x00007f3d8bec7155 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#15 0x00007f3d8ccc7c94 in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f3d8c47e4a8 in
KWin::EffectsHandler::desktopPresenceChanged(KWin::EffectWindow*, int, int) ()
from /usr/lib/x86_64-linux-gnu/libkwineffects.so.9
#17 0x00007f3d8c47fe71 in ?? () from
/usr/lib/x86_64-linux-gnu/libkwineffects.so.9
#18 0x00007f3d8ccc8a19 in QObject::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f3d8d58889c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f3d8d590296 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f3d8cc9ccf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f3d8cc9f3bb in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f3d8ccecd1a in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f3d7960e86d in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#25 0x00007f3d8cc9acea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f3d8cca32fc in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f3d8f0e7206 in kdemain () from
/usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#28 0x00007f3d8ed35830 in __libc_start_main (main=0x400710, argc=3,
argv=0x7ffd522f0618, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd522f0608) at ../csu/libc-start.c:291
#29 0x0000000000400749 in _start ()

Possible duplicates by query: bug 374340, bug 374119, bug 374117, bug 373872,
bug 373726.

Reported using DrKonqi

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