Application: kwin_x11 (5.8.4) Qt Version: 5.7.0 Frameworks Version: 5.28.0 Operating System: Linux 4.8.11-1-ARCH x86_64 Distribution: "Arch Linux" -- Information about the crash: - What I was doing when the application crashed: 1. Enabled fade virtual desktop effect 2. Randomly switched virtual desktops for some time The crash can be reproduced sometimes. -- Backtrace: Application: KWin (kwin_x11), signal: Segmentation fault Using host libthread_db library "/usr/lib/libthread_db.so.1". [Current thread is 1 (Thread 0x7f3871bc5840 (LWP 32763))] Thread 4 (Thread 0x7f382aa77700 (LWP 309)): #0 0x00007f386a8a310f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0 #1 0x00007f386dbf9ac4 in () at /usr/lib/libQt5Script.so.5 #2 0x00007f386dbf9b09 in () at /usr/lib/libQt5Script.so.5 #3 0x00007f386a89d454 in start_thread () at /usr/lib/libpthread.so.0 #4 0x00007f387160f7df in clone () at /usr/lib/libc.so.6 Thread 3 (Thread 0x7f38358f0700 (LWP 308)): #0 0x00007f3871606551 in ppoll () at /usr/lib/libc.so.6 #1 0x00007f386ecb3ac9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5 #2 0x00007f386ecb53b8 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #3 0x00007f386ec6223a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #4 0x00007f386ea850f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5 #5 0x00007f38695fb2d5 in () at /usr/lib/libQt5Qml.so.5 #6 0x00007f386ea89d78 in () at /usr/lib/libQt5Core.so.5 #7 0x00007f386a89d454 in start_thread () at /usr/lib/libpthread.so.0 #8 0x00007f387160f7df in clone () at /usr/lib/libc.so.6 Thread 2 (Thread 0x7f38554b3700 (LWP 32767)): #0 0x00007f3871606551 in ppoll () at /usr/lib/libc.so.6 #1 0x00007f386ecb3ac9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5 #2 0x00007f386ecb53b8 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #3 0x00007f386ec6223a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #4 0x00007f386ea850f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5 #5 0x00007f38687c5e55 in () at /usr/lib/libQt5DBus.so.5 #6 0x00007f386ea89d78 in () at /usr/lib/libQt5Core.so.5 #7 0x00007f386a89d454 in start_thread () at /usr/lib/libpthread.so.0 #8 0x00007f387160f7df in clone () at /usr/lib/libc.so.6 Thread 1 (Thread 0x7f3871bc5840 (LWP 32763)): [KCrash Handler] #6 0x00007f3869592254 in () at /usr/lib/libQt5Qml.so.5 #7 0x00007f386958feb2 in QQmlMetaType::qmlSingletonTypes() () at /usr/lib/libQt5Qml.so.5 #8 0x00007f38695672d0 in QQmlEngine::~QQmlEngine() () at /usr/lib/libQt5Qml.so.5 #9 0x00007f3869567449 in QQmlEngine::~QQmlEngine() () at /usr/lib/libQt5Qml.so.5 #10 0x00007f387155c990 in __run_exit_handlers () at /usr/lib/libc.so.6 #11 0x00007f387155c9ea in () at /usr/lib/libc.so.6 #12 0x00007f3857e82ba3 in () at /usr/lib/libQt5XcbQpa.so.5 #13 0x00007f386ec904b9 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5 #14 0x00007f386f943e0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5 #15 0x00007f386f94b581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5 #16 0x00007f386ec63de0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5 #17 0x00007f386ec6656d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5 #18 0x00007f386ecb51fa in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #19 0x00007f3857ef917d in () at /usr/lib/libQt5XcbQpa.so.5 #20 0x00007f386ec6223a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #21 0x00007f386ec6a73c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5 #22 0x00007f38718ce495 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so #23 0x00007f3871547291 in __libc_start_main () at /usr/lib/libc.so.6 #24 0x000000000040069a in _start () Reported using DrKonqi
Unfortunately the backtrace is (as always with Arch) lacking debug symbols. We see that it crashes, but not where and why. There is nothing we can do to investigate.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!