Application: plasmashell (5.10.4)

Qt Version: 5.9.1
Frameworks Version: 5.36.0
Operating System: Linux 4.12.6-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Plug headphones in and remove them. 

- Unusual behavior I noticed:
Fairly often, my system speakers stop outputting sound. I can fix that by plugging in my headphones. Sound plays through the headphones. When I unplug the headphones, I get the crash and when it restarts, the system speakers start working again.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcf1bc9ec80 (LWP 618))]

Thread 11 (Thread 0x7fce31fd0700 (LWP 3279)):
#0  0x00007fcf0fb9ca84 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fcf0fb56ad7 in g_main_context_acquire () at /usr/lib/libglib-2.0.so.0
#2  0x00007fcf0fb57ac5 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fcf0fb57d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fcf15b73084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fcf1593040e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fcf18ab91d5 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fce33fff700 (LWP 1764)):
#0  0x00007fcf094f1cb4 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#1  0x00007fcf094f259e in pa_fdsem_before_poll () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#2  0x00007fcf0950a217 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#3  0x00007fcf09d9099c in pa_mainloop_dispatch () at /usr/lib/libpulse.so.0
#4  0x00007fcf09d90d9c in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#5  0x00007fcf09d90e40 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#6  0x00007fcf09d9ee29 in  () at /usr/lib/libpulse.so.0
#7  0x00007fcf09519fe8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#8  0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fce3daf8700 (LWP 1763)):
#0  0x00007fcf14b0354f in pthread_getspecific () at /usr/lib/libpthread.so.0
#1  0x00007fcf0fb7efd0 in g_thread_self () at /usr/lib/libglib-2.0.so.0
#2  0x00007fcf0fb57d0d in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fcf15b73084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fcf1593040e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fcf18ab91d5 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fce50a03700 (LWP 1030)):
#0  0x00007fcf0fb9ca84 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fcf0fb57b2e in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fcf0fb57d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fcf15b73084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fcf1593040e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fce533a618a in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fce66621700 (LWP 885)):
#0  0x00007fcf1523abad in read () at /usr/lib/libc.so.6
#1  0x00007fcf0fb9b730 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fcf0fb576eb in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fcf0fb57bb0 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fcf0fb57d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fcf15b73084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fcf1593040e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fcf196718d6 in  () at /usr/lib/libQt5Quick.so.5
#9  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fcef5bbb700 (LWP 869)):
#0  0x00007fcf14b021ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fcf1b38cb04 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fcf1b38cb49 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fcef7dc6700 (LWP 827)):
#0  0x00007fcf1523abad in read () at /usr/lib/libc.so.6
#1  0x00007fcf0fb9b730 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fcf0fb576eb in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fcf0fb57bb0 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fcf0fb57d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fcf15b73084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fcf1593040e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fcf18ab91d5 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fcefdcb2700 (LWP 774)):
#0  0x00007fcf1523abad in read () at /usr/lib/libc.so.6
#1  0x00007fcf0fb9b730 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fcf0fb576eb in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fcf0fb57bb0 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fcf0fb57d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fcf15b73084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fcf1593040e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fcf18ab91d5 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fceff6fc700 (LWP 677)):
#0  0x00007fcf1523ee9d in poll () at /usr/lib/libc.so.6
#1  0x00007fcf0fb57c09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fcf0fb57d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fcf15b73084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fcf1593040e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fcf15f92396 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fcf058f2700 (LWP 636)):
#0  0x00007fcf1523ee9d in poll () at /usr/lib/libc.so.6
#1  0x00007fcf1a29a8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007fcf1a29c679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fcf07e6872a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fcf1593515b in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fcf14afc049 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fcf15248f0f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fcf1bc9ec80 (LWP 618)):
[KCrash Handler]
#5  0x00007fcf18a9fa01 in QQmlBinding::getPropertyData(QQmlPropertyData**, QQmlPropertyData*) const () at /usr/lib/libQt5Qml.so.5
#6  0x00007fcf18aa2cfc in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fcf18aa37de in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007fcf18aa05a3 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#9  0x00007fcf18a77293 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#10 0x00007fcf18a15cd9 in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#11 0x00007fcf15b47f9f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#12 0x00007fce5cca8d84 in  () at /usr/lib/qt/qml/org/kde/plasma/private/volume/libplasma-volume-declarative.so
#13 0x00007fce5cc9dd11 in  () at /usr/lib/qt/qml/org/kde/plasma/private/volume/libplasma-volume-declarative.so
#14 0x00007fcf09d86d8c in  () at /usr/lib/libpulse.so.0
#15 0x00007fcf09503ba1 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#16 0x00007fcf09503f2b in pa_pdispatch_run () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#17 0x00007fcf09d7ba6e in  () at /usr/lib/libpulse.so.0
#18 0x00007fcf09506997 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#19 0x00007fcf095095eb in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#20 0x00007fcf09509989 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#21 0x00007fcf0950a20a in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#22 0x00007fcf09b67f36 in  () at /usr/lib/libpulse-mainloop-glib.so.0
#23 0x00007fcf0fb57a57 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#24 0x00007fcf0fb57c88 in  () at /usr/lib/libglib-2.0.so.0
#25 0x00007fcf0fb57d1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#26 0x00007fcf15b73061 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#27 0x00007fcf15b16ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#28 0x00007fcf15b20048 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#29 0x000000918f7f973b in  ()
#30 0x00007fcf1517b4ca in __libc_start_main () at /usr/lib/libc.so.6
#31 0x000000918f7f9ada in _start ()

Reported using DrKonqi