Application: systemsettings5 (5.5.5)
 (Compiled from sources)
Qt Version: 5.5.1
Operating System: Linux 4.4.0-21-generic i686
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:  i was adjust the screen colors to make the wheat look like real wheat does

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb24f8800 (LWP 4497))]

Thread 2 (Thread 0xb20b9b40 (LWP 4499)):
#0  0xb77a1c31 in __kernel_vsyscall ()
#1  0xb5d02f8f in poll () at ../sysdeps/unix/syscall-template.S:84
#2  0xb4c6841d in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#3  0xb4c6a59b in xcb_wait_for_event () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4  0xb21ff273 in QXcbEventReader::run (this=0x849bc40) at qxcbconnection.cpp:1253
#5  0xb5fdf43b in QThreadPrivate::start (arg=0x849bc40) at thread/qthread_unix.cpp:331
#6  0xb4bee2b5 in start_thread (arg=0xb20b9b40) at pthread_create.c:333
#7  0xb5d0d16e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 1 (Thread 0xb24f8800 (LWP 4497)):
[KCrash Handler]
#7  0x00000030 in ?? ()
#8  0xb61ea55f in QObject::disconnect (sender=0x8631b98, signal=<optimized out>, receiver=0x8696840, method=0x86e0ed9 "slotManagedTopLevelWidgetDestroyed()") at kernel/qobject.cpp:2932
#9  0xaedc455c in KParts::PartManager::~PartManager (this=0x8696840, __in_chrg=<optimized out>) at ../../src/partmanager.cpp:136
#10 0xaedc474a in KParts::PartManager::~PartManager (this=0x8696840, __in_chrg=<optimized out>) at ../../src/partmanager.cpp:146
#11 0xb61e4970 in QObjectPrivate::deleteChildren (this=0x8697e48) at kernel/qobject.cpp:1946
#12 0xb61edf4c in QObject::~QObject (this=0x8697d70, __in_chrg=<optimized out>) at kernel/qobject.cpp:1024
#13 0xaedbc5b8 in KParts::Part::~Part (this=0x8697d70, __vtt_parm=0xaf6795a8 <VTT for KHTMLPart+8>, __in_chrg=<optimized out>) at ../../src/part.cpp:47
#14 0xaedbe18e in KParts::ReadOnlyPart::~ReadOnlyPart (this=0x8697d70, __vtt_parm=0xaf6795a4 <VTT for KHTMLPart+4>, __in_chrg=<optimized out>) at ../../src/readonlypart.cpp:51
#15 0xaf005cb1 in KHTMLPart::~KHTMLPart (this=0x8697d70, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../src/khtml_part.cpp:558
#16 0xaf005dfa in KHTMLPart::~KHTMLPart (this=0x8697d70, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../src/khtml_part.cpp:606
#17 0xb61e55d4 in qDeleteInEventHandler (o=0x8697d70) at kernel/qobject.cpp:4455
#18 0xb61e7269 in QObject::event (this=0x8697d70, e=0x86d0780) at kernel/qobject.cpp:1230
#19 0xb6d3915a in QApplicationPrivate::notify_helper (this=0x8489d30, receiver=0x8697d70, e=0x86d0780) at kernel/qapplication.cpp:3716
#20 0xb6d3e81c in QApplication::notify (this=0xbfc85370, receiver=0x8697d70, e=0x86d0780) at kernel/qapplication.cpp:3499
#21 0xb61b681f in QCoreApplication::notifyInternal (this=0xbfc85370, receiver=0x8697d70, event=0x86d0780) at kernel/qcoreapplication.cpp:965
#22 0xb61b8eff in QCoreApplication::sendEvent (event=0x86d0780, receiver=<optimized out>) at kernel/qcoreapplication.h:224
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x84898b8) at kernel/qcoreapplication.cpp:1593
#24 0xb61b93e7 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1451
#25 0xb620e703 in postEventSourceDispatch (s=0x84af378) at kernel/qeventdispatcher_glib.cpp:271
#26 0xb4aa5e29 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0xb4aa60c9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb4aa6194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0xb620eaf3 in QEventDispatcherGlib::processEvents (this=0x84b8ec8, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#30 0xb22348e1 in QPAEventDispatcherGlib::processEvents (this=0x84b8ec8, flags=...) at eventdispatchers/qeventdispatcher_glib.cpp:115
#31 0xb61b3953 in QEventLoop::processEvents (this=0xbfc85298, flags=...) at kernel/qeventloop.cpp:128
#32 0xb61b3daa in QEventLoop::exec (this=0xbfc85298, flags=...) at kernel/qeventloop.cpp:204
#33 0xb61bc385 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#34 0xb677b931 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1542
#35 0xb6d35024 in QApplication::exec () at kernel/qapplication.cpp:2976
#36 0x08053fc0 in main (argc=1, argv=0xbfc85444) at /build/systemsettings-PMh1Zd/systemsettings-5.5.5/app/main.cpp:55

Possible duplicates by query: bug 377227, bug 376969, bug 375852, bug 375109, bug 374093.

Reported using DrKonqi