Bug 400472

Application: systemsettings5 (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:

setting launch feedback from static to bouncing

- Unusual behavior I noticed:

window title blinking

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7fed34e840 (LWP 3800))]

Thread 6 (Thread 0x7f7fc2bb8700 (LWP 3913)):
#0  0x00007f7ff3716f64 in __GI___libc_read (fd=20, buf=0x7f7fc2bb7b9e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f7fe03cb1f1 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#2  0x00007f7fe044bdbe in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f7fe044c820 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f7fe044c8e0 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f7fe045a8f9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f7fe03fa6f8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#7  0x00007f7ff1bc0164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f7ff3727def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f7fce071700 (LWP 3812)):
#0  0x00007f7ff0891524 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ff084ae06 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ff084af6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ff3c3e15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7ff3beb16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7ff3a3a0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7ff2cfb1f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f7ff3a43c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7ff1bc0164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f7ff3727def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f7fe34a0700 (LWP 3803)):
#0  0x00007f7ff1bc62eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f7fe40024c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7ff1bc62eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f7fe4002478, cond=0x7f7fe40024a0) at pthread_cond_wait.c:502
#2  0x00007f7ff1bc62eb in __pthread_cond_wait (cond=0x7f7fe40024a0, mutex=0x7f7fe4002478) at pthread_cond_wait.c:655
#3  0x00007f7fe38f546b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f7fe38f51d7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f7ff1bc0164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f7ff3727def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7fe9db9700 (LWP 3802)):
#0  0x00007f7ff371b6d9 in __GI___poll (fds=0x7f7fdc004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7ff084ae46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ff084af6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ff3c3e15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7ff3beb16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7ff3a3a0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7ff3ef7545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f7ff3a43c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7ff1bc0164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f7ff3727def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7feba72700 (LWP 3801)):
#0  0x00007f7ff371b6d9 in __GI___poll (fds=0x7f7feba71c78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7ff1b7e917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f7ff1b8053a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7feca14159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f7ff3a43c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7ff1bc0164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f7ff3727def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7fed34e840 (LWP 3800)):
[KCrash Handler]
#6  0x00007f7ff5001300 in KQuickAddons::ConfigModule::needsSave() () at /usr/lib/x86_64-linux-gnu/libKF5QuickAddons.so.5
#7  0x00007f7ff51374bb in  () at /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#8  0x00007f7ff3c15830 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7fcd7abd43 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kcms/kcm_launchfeedback.so
#10 0x00007f7fcd7ae3e3 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kcms/kcm_launchfeedback.so
#11 0x00007f7ff2c17084 in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f7ff2c17dde in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f7ff2c17ed4 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f7ff2c2aeac in QV4::Runtime::method_storeProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f7ff2c36789 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f7fd40058ed in  ()
#17 0x00007f7fcd343320 in  ()
#18 0x00007f7fcd343328 in  ()
#19 0x00005613c1a36740 in  ()
#20 0x0000000000000000 in  ()
[Inferior 1 (process 3800) detached]

Reported using DrKonqi