Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.00 (4.7.0)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-10-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:Plasma crashed as I tried to log out. I quit some applications via system monitor(Ctrl+Esc). The automatic bug reporter did not find the information useful and asked to install debug packages. When clicked yes to install debug packages, it would not allow to. Luckily, I still had enough control to open Kpackagekit and install the necessary packages. I rescanned with bug reporter and it asked me if I wanted to install debug packages again. This time it saw that the packages were installed and it allowed me to proceed in the bug reporting process. Fresh Kubuntu Desktop Amd_64 install, laptop with 4gb of memory, Intel core2 duo 2.2ghz

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f2d18b8a7c0 (LWP 1870))]

Thread 8 (Thread 0x7f2cf5045700 (LWP 1871)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f2cf50449e0 in ?? ()
#2  0x00007fff4e2fc7b2 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 7 (Thread 0x7f2cee7f4700 (LWP 1872)):
#0  0x00007f2d0d9b13d0 in __pthread_mutex_lock (mutex=0x2c96108) at pthread_mutex_lock.c:62
#1  0x00007f2d0cea7624 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d15697446 in QEventDispatcherGlib::processEvents (this=0x2c95910, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#3  0x00007f2d1566b882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#4  0x00007f2d1566babc in QEventLoop::exec (this=0x7f2cee7f3cd0, flags=...) at kernel/qeventloop.cpp:201
#5  0x00007f2d15582924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#6  0x00007f2d1564dc2f in QInotifyFileSystemWatcherEngine::run (this=0x2c94e90) at io/qfilesystemwatcher_inotify.cpp:248
#7  0x00007f2d15585175 in QThreadPrivate::start (arg=0x2c94e90) at thread/qthread_unix.cpp:320
#8  0x00007f2d0af2c853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f2d0d9aed8c in start_thread (arg=0x7f2cee7f4700) at pthread_create.c:304
#10 0x00007f2d1848804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f2ce95f8700 (LWP 1945)):
#0  0x00007f2d0d9b2d9d in __pthread_mutex_unlock_usercnt (mutex=0x2ec1d78) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x2ec1d78) at pthread_mutex_unlock.c:290
#2  0x00007f2d0cea70f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d0cea79f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2cea70fc44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f2d0cece3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f2d0af2c853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#7  0x00007f2d0d9aed8c in start_thread (arg=0x7f2ce95f8700) at pthread_create.c:304
#8  0x00007f2d1848804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f2ce7f5a700 (LWP 7094)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f2d1558582b in wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2d11808704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2bcbf10, th=0x3ba5ec0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2d1180ad73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x3ba5ec0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2d11809b8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f2ce7f59d20, parent=0x2bcbf10, th=0x3ba5ec0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f2d11809c1b in ThreadWeaver::Thread::run (this=0x3ba5ec0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f2d15585175 in QThreadPrivate::start (arg=0x3ba5ec0) at thread/qthread_unix.cpp:320
#8  0x00007f2d0af2c853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f2d0d9aed8c in start_thread (arg=0x7f2ce7f5a700) at pthread_create.c:304
#10 0x00007f2d1848804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f2cebbec700 (LWP 7095)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f2d1558582b in wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2d11808704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2bcbf10, th=0x33b06b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2d1180ad73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x33b06b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2d1180ad8c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x33b06b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f2d1180ad8c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x33b06b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f2d1180ad8c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x33b06b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8  0x00007f2d1180ad8c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x33b06b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#9  0x00007f2d11809b8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f2cebbebd20, parent=0x2bcbf10, th=0x33b06b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#10 0x00007f2d11809c1b in ThreadWeaver::Thread::run (this=0x33b06b0) at ../../../threadweaver/Weaver/Thread.cpp:142
#11 0x00007f2d15585175 in QThreadPrivate::start (arg=0x33b06b0) at thread/qthread_unix.cpp:320
#12 0x00007f2d0af2c853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#13 0x00007f2d0d9aed8c in start_thread (arg=0x7f2cebbec700) at pthread_create.c:304
#14 0x00007f2d1848804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#15 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f2ce9df9700 (LWP 7096)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f2d1558582b in wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2d11808704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2bcbf10, th=0x3ad9c70) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2d1180ad73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x3ad9c70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2d1180ad8c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x3ad9c70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f2d1180ad8c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x3ad9c70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f2d11809b8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f2ce9df8d20, parent=0x2bcbf10, th=0x3ad9c70) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f2d11809c1b in ThreadWeaver::Thread::run (this=0x3ad9c70) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f2d15585175 in QThreadPrivate::start (arg=0x3ad9c70) at thread/qthread_unix.cpp:320
#10 0x00007f2d0af2c853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007f2d0d9aed8c in start_thread (arg=0x7f2ce9df9700) at pthread_create.c:304
#12 0x00007f2d1848804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2ce5ef9700 (LWP 7097)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f2d1558582b in wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2b457c0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2d11808704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2bcbf10, th=0x3ba7f50) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2d1180ad73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b388a0, th=0x3ba7f50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2d11809b8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f2ce5ef8d20, parent=0x2bcbf10, th=0x3ba7f50) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f2d11809c1b in ThreadWeaver::Thread::run (this=0x3ba7f50) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f2d15585175 in QThreadPrivate::start (arg=0x3ba7f50) at thread/qthread_unix.cpp:320
#8  0x00007f2d0af2c853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f2d0d9aed8c in start_thread (arg=0x7f2ce5ef9700) at pthread_create.c:304
#10 0x00007f2d1848804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2d18b8a7c0 (LWP 1870)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f2cfea00da4 in TaskGroupItem::~TaskGroupItem (this=0x378e1c0, __in_chrg=<value optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007f2cfea00e49 in TaskGroupItem::~TaskGroupItem (this=0x378e1c0, __in_chrg=<value optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007f2d156804c8 in QObject::event (this=0x378e1c0, e=<value optimized out>) at kernel/qobject.cpp:1209
#10 0x00007f2d150511bb in QGraphicsWidget::event (this=0x378e1c0, event=0x3d6ccc0) at graphicsview/qgraphicswidget.cpp:1423
#11 0x00007f2d14a299f4 in QApplicationPrivate::notify_helper (this=0x21d0bb0, receiver=0x378e1c0, e=0x3d6ccc0) at kernel/qapplication.cpp:4462
#12 0x00007f2d14a2e3ba in QApplication::notify (this=<value optimized out>, receiver=0x378e1c0, e=0x3d6ccc0) at kernel/qapplication.cpp:4341
#13 0x00007f2d1630c796 in KApplication::notify (this=0x21b0290, receiver=0x378e1c0, event=0x3d6ccc0) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f2d1566c49c in QCoreApplication::notifyInternal (this=0x21b0290, receiver=0x378e1c0, event=0x3d6ccc0) at kernel/qcoreapplication.cpp:731
#15 0x00007f2d1566fc25 in sendEvent (receiver=0x0, event_type=52, data=0x20f0b00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x20f0b00) at kernel/qcoreapplication.cpp:1372
#17 0x00007f2d1566ff0e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1015
#18 0x00007f2d187769dc in kdemain (argc=1, argv=0x7fff4e2161d8) at ../../../../plasma/desktop/shell/main.cpp:120
#19 0x00007f2d183c0eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=1, ubp_av=0x7fff4e2161d8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff4e2161c8) at libc-start.c:226
#20 0x0000000000400669 in _start ()

This bug may be a duplicate of or related to bug 275286.

Possible duplicates by query: bug 278733, bug 278732, bug 278476, bug 276977, bug 276885.

Reported using DrKonqi