https://bugs.kde.org/show_bug.cgi?id=414805
Bug ID: 414805
Summary: Taskbar panel crash after external screen disconnect
Product: kwin
Version: 5.17.3
Platform: unspecified
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: edoubray...@gmail.com
Target Milestone: ---
Application: kwin_x11 (5.17.3)
Qt Version: 5.13.2
Frameworks Version: 5.64.0
Operating System: Linux 4.15.0-70-generic x86_64
Distribution: KDE neon User Edition 5.17
-- Information about the crash:
- What I was doing when the application crashed:
Clicking around taskbar (including the active window "icon" and the applets
icons)
- Unusual behavior I noticed:
Panel was "recreated" a few times before crashing
- Custom settings of the application:
dark theme
-- 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 0x7f20d99ff880 (LWP 3734))]
Thread 6 (Thread 0x7f20b75ef700 (LWP 29045)):
#0 0x00007f20d6871f79 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1 0x00007f20d689c230 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f20d683f06a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f20d665a3aa in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f20d665bb52 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f20d22ac6db in start_thread (arg=0x7f20b75ef700) at
pthread_create.c:463
#6 0x00007f20d936988f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 5 (Thread 0x7f20a21f7700 (LWP 9794)):
[KCrash Handler]
#6 0x00007f20d6e3b3a4 in QScreen::handle() const () at
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#7 0x00007f20c1353b48 in
QXcbIntegration::createPlatformOpenGLContext(QOpenGLContext*) const () at
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#8 0x00007f20d6e5676f in QOpenGLContext::create() () at
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#9 0x00007f20d14385ad in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f20d1439a24 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f20d143d2b8 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f20d665bb52 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f20d22ac6db in start_thread (arg=0x7f20a21f7700) at
pthread_create.c:463
#14 0x00007f20d936988f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 4 (Thread 0x7f20b5984700 (LWP 4267)):
#0 0x00007f20d22b29f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f20d5aabfb8) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1 0x00007f20d22b29f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f20d5aabf68, cond=0x7f20d5aabf90) at pthread_cond_wait.c:502
#2 0x00007f20d22b29f3 in __pthread_cond_wait (cond=0x7f20d5aabf90,
mutex=0x7f20d5aabf68) at pthread_cond_wait.c:655
#3 0x00007f20d57b6874 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4 0x00007f20d57b68b9 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5 0x00007f20d22ac6db in start_thread (arg=0x7f20b5984700) at
pthread_create.c:463
#6 0x00007f20d936988f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7f20b6dee700 (LWP 3946)):
#0 0x00007f20d935ccf6 in __GI_ppoll (fds=0x7f20a4000d28, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1 0x00007f20d689a8a1 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f20d689c038 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f20d683f06a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f20d665a3aa in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f20d0cb8815 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6 0x00007f20d665bb52 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f20d22ac6db in start_thread (arg=0x7f20b6dee700) at
pthread_create.c:463
#8 0x00007f20d936988f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f20bd946700 (LWP 3761)):
#0 0x00007f20d935ccf6 in __GI_ppoll (fds=0x7f20b000b948, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1 0x00007f20d689a8a1 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f20d689c038 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f20d683f06a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f20d665a3aa in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f20cf8850e5 in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6 0x00007f20d665bb52 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f20d22ac6db in start_thread (arg=0x7f20bd946700) at
pthread_create.c:463
#8 0x00007f20d936988f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f20d99ff880 (LWP 3734)):
#0 0x00007f20d22b29f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55c052cd15b4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1 0x00007f20d22b29f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55c052cd1560, cond=0x55c052cd1588) at pthread_cond_wait.c:502
#2 0x00007f20d22b29f3 in __pthread_cond_wait (cond=0x55c052cd1588,
mutex=0x55c052cd1560) at pthread_cond_wait.c:655
#3 0x00007f20d6662aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f20d6662df9 in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f20d143a0ed in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6 0x00007f20d143c66d in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7 0x00007f20d143cce9 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8 0x00007f20d6e1f525 in QWindow::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#9 0x00007f20d149ca45 in QQuickWindow::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f2004b5e4db in PlasmaQuick::Dialog::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#11 0x00007f20d7645eac in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f20d764d4b0 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f20d6840f08 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f20d6e1541a in
QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007f20d6e1566d in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#16 0x00007f20d6def79b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#17 0x00007f20c1377173 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#18 0x00007f20d683f06a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f20d68483e0 in QCoreApplication::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f20d9641d05 in kdemain () at
/usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#21 0x00007f20d9269b97 in __libc_start_main (main=0x55c051231720, argc=3,
argv=0x7fffdd777da8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffdd777d98) at ../csu/libc-start.c:310
#22 0x000055c05123175a in _start ()
Possible duplicates by query: bug 414555, bug 411216, bug 403543, bug 401605,
bug 381516.
Reported using DrKonqi
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