Application: systemsettings5 (5.5.5)
 (Compiled from sources)
Qt Version: 5.5.1
Operating System: Linux 4.4.0-59-generic x86_64
Distribution: Ultimate Edition 5.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Navigating and browsing through system settings with the view in tree mode. Limited applications running. Changing between sub-categories inside the "Audio Output Mode".  I switched quickly between the analog stereo and anolog duplex mode about 5 or 6 times.  PC first started to lag and hang before becoming  glitchy and freezing for an extended period of time (2-3 minutes). Once freeze released, I shut-down settings and was greeted by the bug reporter.  Shortly before initial lagging I noticed that the title text was lingering and overlapping from one option screen to the next.

-- 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 0x7f633772a8c0 (LWP 5384))]

Thread 4 (Thread 0x7f62e1ec6700 (LWP 5516)):
#0  0x00007f6333e47b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6330d9838c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6330d9849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f63347747cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f633471bb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6334538834 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f62e28fd7d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f633453d7be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f63312b96ba in start_thread (arg=0x7f62e1ec6700) at pthread_create.c:333
#9  0x00007f6333e5382d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f62fef69700 (LWP 5422)):
#0  0x00007f6333e47b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6330d9838c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6330d9849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f63347747cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f633471bb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6334538834 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6332eb73c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f633453d7be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f63312b96ba in start_thread (arg=0x7f62fef69700) at pthread_create.c:333
#9  0x00007f6333e5382d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f6326ea7700 (LWP 5385)):
#0  0x00007f6333e47b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6331b2fc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6331b318d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f632982b629 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f633453d7be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f63312b96ba in start_thread (arg=0x7f6326ea7700) at pthread_create.c:333
#6  0x00007f6333e5382d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f633772a8c0 (LWP 5384)):
[KCrash Handler]
#6  0x0000000080000000 in ?? ()
#7  0x00007f6334750f49 in QObject::disconnect(QObject const*, char const*, QObject const*, char const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f63174621b3 in KParts::PartManager::~PartManager() () from /usr/lib/x86_64-linux-gnu/libKF5Parts.so.5
#9  0x00007f6317462369 in KParts::PartManager::~PartManager() () from /usr/lib/x86_64-linux-gnu/libKF5Parts.so.5
#10 0x00007f633474b28b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f6334754b00 in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f6317ba531b in KHTMLPart::~KHTMLPart() () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#13 0x00007f6317ba5439 in KHTMLPart::~KHTMLPart() () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#14 0x00007f633474dc20 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f6335bf105c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f6335bf6516 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f633471e38b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f6334720786 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f63347743c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f6330d98197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f6330d983f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f6330d9849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f63347747cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f633471bb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f6334723bec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x000000000040f7a1 in main ()

Possible duplicates by query: bug 374093, bug 372657, bug 368230, bug 367884, bug 366515.

Reported using DrKonqi