Application: plasma-discover (5.8.8)

Qt Version: 5.6.1
Frameworks Version: 5.36.0
Operating System: Linux 4.10.0-40-lowlatency x86_64
Distribution: Ubuntu 16.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I had just booted up. Pulseaudio comes up automatically showing it is started and functional. I closed the pulseaudio window and was advised (as always) that pulseaudio is running in the tray. Next, I initiated timidity -iA -B2,8 -Os1l -s 44100 & manually. This is to provide rosegarden audio. I noticed that Discover was indicating updates available. I opened Discover and it stated there were 22 updates available. When they were identified, I scanned the list and saw several libs for pulse, and several pulseaudio packages. Because of the crash, the listed files were removed from my screen. I started the crash report and tried to install the crash symbols. The download succeeded, and some of the install did too. BUT it crashed and in the end did not succeed. Discover again showed it had updates, and this time there were 18 packages. I have not attempted to install them yet. The files are: 
libpulse-dev (1:8.0-0ubuntu3.7)
libpulse-mainloop-glib0 (1:8.0-0ubuntu3.7)
libpulse0 (1:8.0-0ubuntu3.7)
libpulsedsp (1:8.0-0ubuntu3.7)
pulseaudio (1:8.0-0ubuntu3.7)
pulseaudio-esound-compat (1:8.0-0ubuntu3.7)
pulseaudio-module-bluetooth (1:8.0-0ubuntu3.7)
pulseaudio-module-droid (1:8.0-0ubuntu3.7)
pulseaudio-module-gconf (1:8.0-0ubuntu3.7)
pulseaudio-module-jack (1:8.0-0ubuntu3.7)
pulseaudio-module-lirc (1:8.0-0ubuntu3.7)
pulseaudio-module-raop (1:8.0-0ubuntu3.7)
pulseaudio-module-trust-store (1:8.0-0ubuntu3.7)
pulseaudio-module-x11 (1:8.0-0ubuntu3.7)
pulseaudio-module-zeroconf (1:8.0-0ubuntu3.7)
pulseaudio-module-utils (1:8.0-0ubuntu3.7)

The crash application asked me to log in, and I did. Then it offered similiar crash reports. I made a copy of my crash report and looked for one that was a match for mine. The crash application allowed me to compare the two reports. The duplicate that most closely matched indicated that it has the same number of threads, and the same thread starting points, but differ internally. I deduce that the threads are actually not the same, but the result of the same backtrace procdure.

Regarding audio:
Until recently, it simply did not work. I had no useful audio. ALSA was sparodic and pulseaudio only on one application (pianoteq 5.7), no sound in Firefox, audio players, etc.. After scanning the Internet for solutions to these problems, I found a ppa that was doing daily updates on ubuntu alsa:
http://ppa.launchpad.net/ubuntu-audio-dev/alsa-daily/ubuntu xenial main
This installed alsa packages that resulted in all my audio working except rosegarden. For that I found the line command listed above.

Regarding kde:
Whenever I have tried to install the entire kds system, I am informed that the debug functions depend on older packages and therefore nothing installs. I therefore bypass that and install the entire set less the debug. I had a similar problem with pulseaudio. Same solution.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1ae81358c0 (LWP 6061))]

Thread 10 (Thread 0x7f1aaffff700 (LWP 6119)):
#0  0x00007fff04f6bb0b in clock_gettime ()
#1  0x00007f1af3971836 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f1aafffea70) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f1af440a6c6 in qt_clock_gettime (ts=0x7f1aafffea70, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f1af4585f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f1aa40030d0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f1af4586475 in QTimerInfoList::timerWait (this=0x7f1aa40030d0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007f1af4587afc in timerSourcePrepareHelper (timeout=0x7f1aafffeb34, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:126
#8  idleTimerSourcePrepare (source=<optimized out>, timeout=0x7f1aafffeb34) at kernel/qeventdispatcher_glib.cpp:206
#9  0x00007f1af0b2191d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f1af0b222bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f1af458837b in QEventDispatcherGlib::processEvents (this=0x7f1aa40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#13 0x00007f1af4530ffa in QEventLoop::exec (this=this@entry=0x7f1aafffed00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f1af43599e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#15 0x00007f1af435e808 in QThreadPrivate::start (arg=0x3bfc3d0) at thread/qthread_unix.cpp:341
#16 0x00007f1af128f6ba in start_thread (arg=0x7f1aaffff700) at pthread_create.c:333
#17 0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f1abac0d700 (LWP 6105)):
#0  0x00007f1af395770d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1af0b2238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1af458837b in QEventDispatcherGlib::processEvents (this=0x7f1ab00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f1af4530ffa in QEventLoop::exec (this=this@entry=0x7f1abac0cd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f1af43599e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007f1af435e808 in QThreadPrivate::start (arg=0x266d5d0) at thread/qthread_unix.cpp:341
#7  0x00007f1af128f6ba in start_thread (arg=0x7f1abac0d700) at pthread_create.c:333
#8  0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f1ac1194700 (LWP 6095)):
#0  0x00007f1af395770d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1af0b2238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1af0b22712 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1ac29199d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f1af0b48bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1af128f6ba in start_thread (arg=0x7f1ac1194700) at pthread_create.c:333
#6  0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f1ac1995700 (LWP 6094)):
#0  0x00007f1af395770d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1af0b2238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1af0b224d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1af0b48bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1af128f6ba in start_thread (arg=0x7f1ac1995700) at pthread_create.c:333
#6  0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f1acf4c9700 (LWP 6080)):
#0  0x00007f1af0b21910 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1af0b222bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1af458837b in QEventDispatcherGlib::processEvents (this=0x7f1ac40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f1af4530ffa in QEventLoop::exec (this=this@entry=0x7f1acf4c8d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f1af43599e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007f1af435e808 in QThreadPrivate::start (arg=0x7f1ac8003650) at thread/qthread_unix.cpp:341
#7  0x00007f1af128f6ba in start_thread (arg=0x7f1acf4c9700) at pthread_create.c:333
#8  0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f1ad4d25700 (LWP 6079)):
#0  0x00007fff04f6bb0b in clock_gettime ()
#1  0x00007f1af3971836 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f1ad4d249f0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f1af440a6c6 in qt_clock_gettime (ts=0x7f1ad4d249f0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f1af4585f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f1ac8002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f1af4586475 in QTimerInfoList::timerWait (this=0x7f1ac8002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007f1af458785e in timerSourcePrepareHelper (timeout=0x7f1ad4d24ac4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:126
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f1ad4d24ac4) at kernel/qeventdispatcher_glib.cpp:159
#9  0x00007f1af0b2191d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f1af0b222bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f1af458837b in QEventDispatcherGlib::processEvents (this=0x7f1ac80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#13 0x00007f1af4530ffa in QEventLoop::exec (this=this@entry=0x7f1ad4d24c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f1af43599e4 in QThread::exec (this=this@entry=0x2718e80) at thread/qthread.cpp:500
#15 0x00007f1af699f7d6 in QQuickPixmapReader::run (this=0x2718e80) at util/qquickpixmapcache.cpp:817
#16 0x00007f1af435e808 in QThreadPrivate::start (arg=0x2718e80) at thread/qthread_unix.cpp:341
#17 0x00007f1af128f6ba in start_thread (arg=0x7f1ad4d25700) at pthread_create.c:333
#18 0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f1ad7fff700 (LWP 6072)):
#0  0x00007fff04f6bb0b in clock_gettime ()
#1  0x00007f1af3971836 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f1ad7ffea40) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f1af440a6c6 in qt_clock_gettime (ts=0x7f1ad7ffea40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f1af4585f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f1ad0002cd0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f1af4586475 in QTimerInfoList::timerWait (this=0x7f1ad0002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007f1af458785e in timerSourcePrepareHelper (timeout=0x7f1ad7ffeb14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:126
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f1ad7ffeb14) at kernel/qeventdispatcher_glib.cpp:159
#9  0x00007f1af0b2191d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f1af0b222bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f1af458837b in QEventDispatcherGlib::processEvents (this=0x7f1ad00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#13 0x00007f1af4530ffa in QEventLoop::exec (this=this@entry=0x7f1ad7ffece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f1af43599e4 in QThread::exec (this=this@entry=0x220e650) at thread/qthread.cpp:500
#15 0x00007f1af4cdd6b5 in QQmlThreadPrivate::run (this=0x220e650) at qml/ftw/qqmlthread.cpp:141
#16 0x00007f1af435e808 in QThreadPrivate::start (arg=0x220e650) at thread/qthread_unix.cpp:341
#17 0x00007f1af128f6ba in start_thread (arg=0x7f1ad7fff700) at pthread_create.c:333
#18 0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f1add4f9700 (LWP 6063)):
#0  0x00007f1af395324d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1af0b656f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1af0b21e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1af0b22330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1af458837b in QEventDispatcherGlib::processEvents (this=0x7f1ad80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#6  0x00007f1af4530ffa in QEventLoop::exec (this=this@entry=0x7f1add4f8cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f1af43599e4 in QThread::exec (this=this@entry=0x7f1af727ed40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#8  0x00007f1af720b515 in QDBusConnectionManager::run (this=0x7f1af727ed40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#9  0x00007f1af435e808 in QThreadPrivate::start (arg=0x7f1af727ed40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#10 0x00007f1af128f6ba in start_thread (arg=0x7f1add4f9700) at pthread_create.c:333
#11 0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1ae595a700 (LWP 6062)):
#0  0x00007f1af395770d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1aeeb19c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f1aeeb1b8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f1ae7eb0d29 in QXcbEventReader::run (this=0x219c9e0) at qxcbconnection.cpp:1325
#4  0x00007f1af435e808 in QThreadPrivate::start (arg=0x219c9e0) at thread/qthread_unix.cpp:341
#5  0x00007f1af128f6ba in start_thread (arg=0x7f1ae595a700) at pthread_create.c:333
#6  0x00007f1af39633dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1ae81358c0 (LWP 6061)):
[KCrash Handler]
#6  0x00007f1af665f040 in Transaction::isActive() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#7  0x00007f1af6660a5b in TransactionModel::progress() const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#8  0x00007f1af667e4a5 in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007f1af66812fb in TransactionModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007f1af4c29319 in ReadAccessor::Direct (property=..., n=0x0, output=0x7fff04f63150, object=0x7f1af6898890) at jsruntime/qv4qobjectwrapper.cpp:129
#11 LoadProperty<ReadAccessor::Direct> (v4=0x2236cd0, object=0x7f1af6898890, property=..., notifier=0x0) at jsruntime/qv4qobjectwrapper.cpp:164
#12 0x00007f1af4c2a3c5 in QV4::QObjectWrapper::getProperty (engine=engine@entry=0x2236cd0, object=0x7f1af6898890, property=0x26096d8, captureRequired=captureRequired@entry=true) at jsruntime/qv4qobjectwrapper.cpp:378
#13 0x00007f1af4c2ab4a in QV4::QObjectWrapper::getQmlProperty (this=0x7f1ad70003e8, qmlContext=0x2582a10, name=0x7f1ad70003e0, revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, includeImports=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:318
#14 0x00007f1af4c3c69e in QV4::Object::get (hasProperty=0x0, name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:298
#15 QV4::Runtime::getProperty (engine=0x2236cd0, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:679
#16 0x00007f1adc1c95d0 in ?? ()
#17 0x00007fff04f63580 in ?? ()
#18 0x0000000000000002 in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x00007f1af4c48cf0 in QQmlVMEMetaObject::metaCall (this=0x7f1ad7000320, o=<optimized out>, c=83244032, _id=-687864864, a=0x2236cd0) at qml/qqmlvmemetaobject.cpp:876
#21 0x00007f1af4cc2724 in QV4::Object::call (d=0x7f1ad7000320, this=0x7f1adc117800) at ../../include/QtQml/5.6.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:324
#22 QQmlJavaScriptExpression::evaluate (this=this@entry=0x25cef50, callData=callData@entry=0x7f1ad7000320, isUndefined=isUndefined@entry=0x7fff04f6362c) at qml/qqmljavascriptexpression.cpp:189
#23 0x00007f1af4cc2bc1 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x25cef50, isUndefined=isUndefined@entry=0x7fff04f6362c) at qml/qqmljavascriptexpression.cpp:149
#24 0x00007f1af4cca47e in QQmlBinding::update (this=0x25cef50, flags=...) at qml/qqmlbinding.cpp:187
#25 0x00007f1af4cca98e in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:403
#26 0x00007f1af4ca1ace in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#27 0x00007f1af4c4d4ac in QQmlData::signalEmitted (object=0x7f1af6898890, index=31, a=0x0) at qml/qqmlengine.cpp:773
#28 0x00007f1af455f2b0 in QMetaObject::activate (sender=0x7f1af6898890, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3616
#29 0x00007f1af455fc24 in QtPrivate::QSlotObjectBase::call (a=0x7fff04f65260, r=0x7f1af6898890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#30 QMetaObject::activate (sender=sender@entry=0x7f1af6898890, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fff04f65260) at kernel/qobject.cpp:3715
#31 0x00007f1af45601b7 in QMetaObject::activate (sender=sender@entry=0x7f1af6898890, m=m@entry=0x7f1af477ada0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fff04f65260) at kernel/qobject.cpp:3595
#32 0x00007f1af45d80b4 in QAbstractItemModel::rowsRemoved (this=this@entry=0x7f1af6898890, _t1=..., _t2=-1, _t3=-1) at .moc/moc_qabstractitemmodel.cpp:615
#33 0x00007f1af44da99b in QAbstractItemModel::endRemoveRows (this=0x7f1af6898890) at itemmodels/qabstractitemmodel.cpp:2678
#34 0x00007f1af6661a9c in TransactionModel::removeTransaction(Transaction*) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#35 0x00007f1af455fc24 in QtPrivate::QSlotObjectBase::call (a=0x7fff04f65460, r=0x7f1af6898890, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#36 QMetaObject::activate (sender=sender@entry=0x80b5780, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff04f65460) at kernel/qobject.cpp:3715
#37 0x00007f1af45601b7 in QMetaObject::activate (sender=sender@entry=0x80b5780, m=m@entry=0x7f1af4772820 <QObject::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff04f65460) at kernel/qobject.cpp:3595
#38 0x00007f1af456025f in QObject::destroyed (this=this@entry=0x80b5780, _t1=_t1@entry=0x80b5780) at .moc/moc_qobject.cpp:213
#39 0x00007f1af4566cf5 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:913
#40 0x00007f1af667208d in ?? () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#41 0x00007f1af4560750 in QObject::event (this=0x80b5780, e=<optimized out>) at kernel/qobject.cpp:1247
#42 0x00007f1af54efafc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x80b5780, e=0x8d73e40) at kernel/qapplication.cpp:3804
#43 0x00007f1af54f5036 in QApplication::notify (this=0x7fff04f65b40, receiver=0x80b5780, e=0x8d73e40) at kernel/qapplication.cpp:3561
#44 0x00007f1af45332a8 in QCoreApplication::notifyInternal2 (receiver=0x80b5780, event=event@entry=0x8d73e40) at kernel/qcoreapplication.cpp:1015
#45 0x00007f1af453516a in QCoreApplication::sendEvent (event=0x8d73e40, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:225
#46 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x217ede0) at kernel/qcoreapplication.cpp:1650
#47 0x00007f1af4535628 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#48 0x00007f1af4587f53 in postEventSourceDispatch (s=0x21c2ec0) at kernel/qeventdispatcher_glib.cpp:270
#49 0x00007f1af0b22197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f1af0b223f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f1af0b2249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f1af458835f in QEventDispatcherGlib::processEvents (this=0x21c2ac0, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#53 0x00007f1af4530ffa in QEventLoop::exec (this=this@entry=0x7fff04f65a60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#54 0x00007f1af45396bc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#55 0x000000000040a2d5 in ?? ()
#56 0x00007f1af387c830 in __libc_start_main (main=0x409bc0, argc=3, argv=0x7fff04f65cd8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff04f65cc8) at ../csu/libc-start.c:291
#57 0x000000000040a419 in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 383413.

Possible duplicates by query: bug 387488, bug 387458, bug 387457, bug 387450, bug 387089.

Reported using DrKonqi