Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
Browsing using chromium and using muon to install a dvd authoring tool kdemediafactory.

I usually have my main panel right aligned on the top of the screen, it was suddenly two thirds down the screen.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc4cc9ae7a0 (LWP 2189))]

Thread 6 (Thread 0x7fc4a76f1700 (LWP 2190)):
#0  0x00007fc4c948f403 in socketNotifierSourcePrepare (timeout=0x7fc4a76f0c1c) at kernel/qeventdispatcher_glib.cpp:73
#1  0x00007fc4c0827ff2 in g_main_context_prepare (context=0x1a1c9a0, priority=0x7fc4a76f0c88) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2762
#2  0x00007fc4c0828dfd in g_main_context_iterate (context=0x1a1c9a0, block=1, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3069
#3  0x00007fc4c0829429 in g_main_context_iteration (context=0x1a1c9a0, may_block=1) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3152
#4  0x00007fc4c948ff3e in QEventDispatcherGlib::processEvents (this=0x1a04cc0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fc4c9463cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fc4c9463ef7 in QEventLoop::exec (this=0x7fc4a76f0db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007fc4c937b27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007fc4c9446cbf in QInotifyFileSystemWatcherEngine::run (this=0x1a04ad0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fc4c937dd05 in QThreadPrivate::start (arg=0x1a04ad0) at thread/qthread_unix.cpp:331
#10 0x00007fc4c1335efc in start_thread (arg=0x7fc4a76f1700) at pthread_create.c:304
#11 0x00007fc4cc2a989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fc4a65f5700 (LWP 4851)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc4c937e1ab in wait (time=18446744073709551615, this=0x1a99290) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1a42ae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc4c5178864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b0f6d0, th=0x1d4b320) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc4c517ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a75e10, th=0x1d4b320) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc4c5179ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc4a65f4e00, parent=0x1b0f6d0, th=0x1d4b320) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fc4c5179d5b in ThreadWeaver::Thread::run (this=0x1d4b320) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fc4c937dd05 in QThreadPrivate::start (arg=0x1d4b320) at thread/qthread_unix.cpp:331
#8  0x00007fc4c1335efc in start_thread (arg=0x7fc4a65f5700) at pthread_create.c:304
#9  0x00007fc4cc2a989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fc4a4db3700 (LWP 4852)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc4c937e1ab in wait (time=18446744073709551615, this=0x1a99290) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1a42ae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc4c5178864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b0f6d0, th=0x1c4ab90) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc4c517ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a75e10, th=0x1c4ab90) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc4c5179ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc4a4db2e00, parent=0x1b0f6d0, th=0x1c4ab90) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fc4c5179d5b in ThreadWeaver::Thread::run (this=0x1c4ab90) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fc4c937dd05 in QThreadPrivate::start (arg=0x1c4ab90) at thread/qthread_unix.cpp:331
#8  0x00007fc4c1335efc in start_thread (arg=0x7fc4a4db3700) at pthread_create.c:304
#9  0x00007fc4cc2a989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fc49c70a700 (LWP 4853)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc4c937e1ab in wait (time=18446744073709551615, this=0x1a99290) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1a42ae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc4c5178864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b0f6d0, th=0x217f5b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc4c517ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a75e10, th=0x217f5b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc4c5179ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc49c709e00, parent=0x1b0f6d0, th=0x217f5b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fc4c5179d5b in ThreadWeaver::Thread::run (this=0x217f5b0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fc4c937dd05 in QThreadPrivate::start (arg=0x217f5b0) at thread/qthread_unix.cpp:331
#8  0x00007fc4c1335efc in start_thread (arg=0x7fc49c70a700) at pthread_create.c:304
#9  0x00007fc4cc2a989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fc49bf09700 (LWP 4854)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc4c937e1ab in wait (time=18446744073709551615, this=0x1a99290) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1a42ae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc4c5178864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b0f6d0, th=0x21697b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc4c517ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a75e10, th=0x21697b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc4c5179ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc49bf08e00, parent=0x1b0f6d0, th=0x21697b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fc4c5179d5b in ThreadWeaver::Thread::run (this=0x21697b0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fc4c937dd05 in QThreadPrivate::start (arg=0x21697b0) at thread/qthread_unix.cpp:331
#8  0x00007fc4c1335efc in start_thread (arg=0x7fc49bf09700) at pthread_create.c:304
#9  0x00007fc4cc2a989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc4cc9ae7a0 (LWP 2189)):
[KCrash Handler]
#6  operator== (value=0, this=0x12) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  data (this=0x1f04900) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:575
#8  backendObject (this=0x1f048e0) at ../../../solid/solid/device_p.h:44
#9  Solid::Device::asDeviceInterface (this=0x7fffae33b970, type=@0x1149158) at ../../../solid/solid/device.cpp:167
#10 0x00007fc4c4ca2ac4 in Solid::Predicate::matches (this=0xfe8ce8, device=...) at ../../../solid/solid/predicate.cpp:203
#11 0x00007fc4a4fd02ad in HotplugEngine::predicatesForDevice (this=<optimized out>, device=...) at ../../../../../plasma/generic/dataengines/hotplug/hotplugengine.cpp:151
#12 0x00007fc4a4fd2062 in HotplugEngine::updatePredicates (this=0x1d9c790, path=<optimized out>) at ../../../../../plasma/generic/dataengines/hotplug/hotplugengine.cpp:127
#13 0x00007fc4a4fd22bd in HotplugEngine::qt_metacall (this=0x1d9c790, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffae33bb00) at ./hotplugengine.moc:83
#14 0x00007fc4c9477eba in QMetaObject::activate (sender=0x1e40a20, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffae33bb00) at kernel/qobject.cpp:3278
#15 0x00007fc4c9b217a2 in KDirWatch::dirty (this=<optimized out>, _t1=<optimized out>) at ./kdirwatch.moc:99
#16 0x00007fc4c9b21a45 in KDirWatch::qt_metacall (this=0x1e40a20, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x21c62d0) at ./kdirwatch.moc:86
#17 0x00007fc4c947ba5e in QObject::event (this=0x1e40a20, e=<optimized out>) at kernel/qobject.cpp:1217
#18 0x00007fc4c8815424 in notify_helper (e=0xfe6a20, receiver=0x1e40a20, this=0xddede0) at kernel/qapplication.cpp:4486
#19 QApplicationPrivate::notify_helper (this=0xddede0, receiver=0x1e40a20, e=0xfe6a20) at kernel/qapplication.cpp:4458
#20 0x00007fc4c881a291 in QApplication::notify (this=0xd77200, receiver=0x1e40a20, e=0xfe6a20) at kernel/qapplication.cpp:4365
#21 0x00007fc4ca113126 in KApplication::notify (this=0xd77200, receiver=0x1e40a20, event=0xfe6a20) at ../../kdeui/kernel/kapplication.cpp:311
#22 0x00007fc4c9464afc in QCoreApplication::notifyInternal (this=0xd77200, receiver=0x1e40a20, event=0xfe6a20) at kernel/qcoreapplication.cpp:787
#23 0x00007fc4c946851f in sendEvent (event=0xfe6a20, receiver=0x1e40a20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#24 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xd47430) at kernel/qcoreapplication.cpp:1428
#25 0x00007fc4c948fa73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#26 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#27 0x00007fc4c0828a5d in g_main_dispatch (context=0xdf1400) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
#28 g_main_context_dispatch (context=0xdf1400) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
#29 0x00007fc4c0829258 in g_main_context_iterate (context=0xdf1400, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
#30 0x00007fc4c0829429 in g_main_context_iteration (context=0xdf1400, may_block=1) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3152
#31 0x00007fc4c948fed6 in QEventDispatcherGlib::processEvents (this=0xdde0d0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#32 0x00007fc4c88bd07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#33 0x00007fc4c9463cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#34 0x00007fc4c9463ef7 in QEventLoop::exec (this=0x7fffae33c2c0, flags=...) at kernel/qeventloop.cpp:201
#35 0x00007fc4c9468789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#36 0x00007fc4cc5a81a3 in kdemain (argc=1, argv=0x7fffae33c6a8) at ../../../../plasma/desktop/shell/main.cpp:120
#37 0x00007fc4cc1e930d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffae33c6a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffae33c698) at libc-start.c:226
#38 0x0000000000400671 in _start ()

Possible duplicates by query: bug 286052, bug 284658, bug 282796, bug 281918, bug 280727.

Reported using DrKonqi