Here is a log of the crash:
Jul 12 11:13:34 taichi-z270 systemd-coredump[542734]: Process 542499 (kwin_x11) of user 1000 dumped core.
Stack trace of thread 542499:
#0 0x00007f2484412355 raise (libc.so.6 + 0x3c355)
#1 0x00007f24844123e0 __restore_rt (libc.so.6 + 0x3c3e0)
#2 0x00007f2484412355 raise (libc.so.6 + 0x3c355)
#3 0x00007f24843fb853 abort (libc.so.6 + 0x25853)
#4 0x00007f2483be8061 n/a (libepoxy.so.0 + 0x5e061)
#5 0x00007f2483c4be25 n/a (libepoxy.so.0 + 0xc1e25)
#6 0x00007f247d61fd75 n/a (KWinX11Platform.so + 0x3bd75)
#7 0x00007f247d6202cc n/a (KWinX11Platform.so + 0x3c2cc)
#8 0x00007f247c125cde _ZN4KWin11SceneOpenGL11createSceneEP7QObject (KWinSceneOpenGL.so + 0x13cde)
#9 0x00007f247c1265cb _ZNK4KWin13OpenGLFactory6createEP7QObject (KWinSceneOpenGL.so + 0x145cb)
#10 0x00007f2485da741d n/a (libkwin.so.5 + 0x10741d)
#11 0x00007f2485da82f4 _ZN4KWin13X11Compositor5startEv (libkwin.so.5 + 0x1082f4)
#12 0x00007f2484a861d2 _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2e01d2)
#13 0x00007f2485527702 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15c702)
#14 0x00007f2484a597ba _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2b37ba)
#15 0x00007f2484a5c2a3 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt5Core.so.5 + 0x2b62a3)
#16 0x00007f2484aaf78c _ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30978c)
#17 0x00007f247ec1305f n/a (libQt5XcbQpa.so.5 + 0x5f05f)
#18 0x00007f2484a5813c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b213c)
#19 0x00007f2484a605c4 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x2ba5c4)
#20 0x00005617979c2412 n/a (kwin_x11 + 0x7412)
#21 0x00007f24843fd002 __libc_start_main (libc.so.6 + 0x27002)
#22 0x00005617979c294e _start (kwin_x11 + 0x794e)
Stack trace of thread 542563:
Stack trace of thread 542563:
#0 0x00007f2483d3c158 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0x10158)
#1 0x00007f248487ae08 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xd4e08)
#2 0x00007f2484879084 n/a (libQt5Core.so.5 + 0xd3084)
#3 0x00007f2484874e0f n/a (libQt5Core.so.5 + 0xcee0f)
#4 0x00007f2483d35422 start_thread (libpthread.so.0 + 0x9422)
#5 0x00007f24844d5bf3 __clone (libc.so.6 + 0xffbf3)
Stack trace of thread 542594:
#0 0x00007f24844cb15e ppoll (libc.so.6 + 0xf515e)
#1 0x00007f2484aae29b _Z12qt_safe_pollP6pollfdmPK8timespec (libQt5Core.so.5 + 0x30829b)
#2 0x00007f2484aaf9dd _ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x3099dd)
#3 0x00007f2484a5813c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b213c)
#4 0x00007f2484873c32 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcdc32)
#5 0x00007f2483365789 n/a (libQt5Qml.so.5 + 0x30b789)
#6 0x00007f2484874e0f n/a (libQt5Core.so.5 + 0xcee0f)
#7 0x00007f2483d35422 start_thread (libpthread.so.0 + 0x9422)
#8 0x00007f24844d5bf3 __clone (libc.so.6 + 0xffbf3)
Stack trace of thread 542638:
#0 0x00007f24844cb15e ppoll (libc.so.6 + 0xf515e)
#1 0x00007f2484aae1b1 _Z12qt_safe_pollP6pollfdmPK8timespec (libQt5Core.so.5 + 0x3081b1)
#2 0x00007f2484aaf9dd _ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x3099dd)
#3 0x00007f2484a5813c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b213c)
#4 0x00007f2484873c32 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcdc32)
#5 0x00007f2484874e0f n/a (libQt5Core.so.5 + 0xcee0f)
#6 0x00007f2483d35422 start_thread (libpthread.so.0 + 0x9422)
#7 0x00007f24844d5bf3 __clone (libc.so.6 + 0xffbf3)
Stack trace of thread 542561:
#0 0x00007f24844cb15e ppoll (libc.so.6 + 0xf515e)
#1 0x00007f2484aae1b1 _Z12qt_safe_pollP6pollfdmPK8timespec (libQt5Core.so.5 + 0x3081b1)
#2 0x00007f2484aaf9dd _ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x3099dd)
#3 0x00007f2484a5813c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b213c)
#4 0x00007f2484873c32 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcdc32)
#5 0x00007f2485b62098 n/a (libQt5DBus.so.5 + 0x17098)
#6 0x00007f2484874e0f n/a (libQt5Core.so.5 + 0xcee0f)
#7 0x00007f2483d35422 start_thread (libpthread.so.0 + 0x9422)
#8 0x00007f24844d5bf3 __clone (libc.so.6 + 0xffbf3)
I must say there has been a recent nvidia update and the problem might have a bearing on this. My question is, is this KDE, nvidia or possible hardware problem? Is there something I can do or do I just sit it out (it doesn't happen consistently) until an update that fixes it? Any test I can do?
I use OpenGL 3.1 for rendering. I will test using 2.0 if I get the same problem but I prefer not to use XREnder. Nvidia is current at 450.57-1. Everything is up-to-date.
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