Application: kwin_x11 (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.18.0-10-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
- What I was doing when the application crashed:
I ran minecraft and kwin crashed.
I have also seen this sometimes when I try to play oxygine not included.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f493e769840 (LWP 2967))]

Thread 7 (Thread 0x7f4937fff700 (LWP 682)):
#0  0x00007f4948d547d6 in __GI_ppoll (fds=0x7f492c0190a8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f49478ce141 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f49478cf5b9 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f494787f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f49476ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4945d5a1f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f49476d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4948c27164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f4948d60def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f49359ad700 (LWP 3978)):
#0  0x00007f49478cfc67 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f49478cf564 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f494787f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f49476ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4945d5a1f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#5  0x00007f49476d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4948c27164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#7  0x00007f4948d60def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f49218c2700 (LWP 3331)):
#0  0x00007f4948c2d2eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f49472ebfb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4948c2d2eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f49472ebf68, cond=0x7f49472ebf90) at pthread_cond_wait.c:502
#2  0x00007f4948c2d2eb in __pthread_cond_wait (cond=0x7f49472ebf90, mutex=0x7f49472ebf68) at pthread_cond_wait.c:655
#3  0x00007f49471f4e2a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f49471f4e49 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f4948c27164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f4948d60def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4923cb5700 (LWP 3321)):
#0  0x00007f4948c2d2eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5626bd65042c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4948c2d2eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x5626bd6503d8, cond=0x5626bd650400) at pthread_cond_wait.c:502
#2  0x00007f4948c2d2eb in __pthread_cond_wait (cond=0x5626bd650400, mutex=0x5626bd6503d8) at pthread_cond_wait.c:655
#3  0x00007f493438246b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f49343821d7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f4948c27164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f4948d60def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f493762a700 (LWP 3298)):
#0  0x00007f4948d547d6 in __GI_ppoll (fds=0x7f4924000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f49478ce141 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f49478cf5b9 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f494787f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f49476ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4945d5a1f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f49476d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4948c27164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f4948d60def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f493caec700 (LWP 3110)):
#0  0x00007f4948d547d6 in __GI_ppoll (fds=0x7f493000eb08, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f49478ce141 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f49478cf5b9 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f494787f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f49476ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f494583e545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007f49476d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4948c27164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f4948d60def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f493e769840 (LWP 2967)):
[KCrash Handler]
#6  0x00007f4948c87077 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007f4948c68535 in __GI_abort () at abort.c:79
#8  0x00007f4948c6840f in __assert_fail_base (fmt=0x7f4948df4858 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x7f4946448808 "0 && \"Couldn't find current GLX or EGL context.\\n\"", file=0x7f4946448760 "../src/dispatch_common.c", line=863, function=<optimized out>) at assert.c:92
#9  0x00007f4948c78142 in __GI___assert_fail (assertion=0x7f4946448808 "0 && \"Couldn't find current GLX or EGL context.\\n\"", file=0x7f4946448760 "../src/dispatch_common.c", line=863, function=0x7f4946448840 "epoxy_get_proc_address") at assert.c:101
#10 0x00007f494642343f in  () at /usr/lib/x86_64-linux-gnu/libepoxy.so.0
#11 0x00007f49463f904a in  () at /usr/lib/x86_64-linux-gnu/libepoxy.so.0
#12 0x00007f49473747ca in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#13 0x00007f4947374883 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#14 0x00007f49473715c6 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#15 0x00007f49473717a9 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#16 0x00007f4948aaa5ea in KWin::EffectsHandlerImpl::unloadAllEffects() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007f4948aaa687 in KWin::EffectsHandlerImpl::~EffectsHandlerImpl() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#18 0x00007f493c2c7118 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#19 0x00007f493c2c71e9 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#20 0x00007f4948a8bb8f in  () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#21 0x00007f4948a8c11c in KWin::Compositor::suspend(KWin::Compositor::SuspendReason) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#22 0x00007f49478a9f92 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f494823f4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f4948246ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f4947880499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f494788348b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f49478cf42b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f493e1170ed in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#29 0x00007f494787f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f49478872e2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f4948e3a47b in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#32 0x00007f4948c6a09b in __libc_start_main (main=0x5626bcb56050, argc=1, argv=0x7ffd2acb0b58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd2acb0b48) at ../csu/libc-start.c:308
#33 0x00005626bcb5608a in _start ()
[Inferior 1 (process 2967) detached]

Possible duplicates by query: bug 400170, bug 399644, bug 399344, bug 396830, bug 386263.

Reported using DrKonqi