Bug 294317

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.4 (4.7.4)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-16-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
I have Acer 4820TG Notebook and a 22" monitor. 
Before this happen, I opened my notebook without power connection, and than kernel was crashed. I can't remember that crash reason but i installed linux-crashdump just now. However, I plugged power connector and open notebook again. It's worked correctly, after plugged in power connector. I was searched about kernel crash and can't find anything. For to see kernel crash again, I closed all applications and plugged out power, vga, speaker connectors. 
My default output is VGA and after unplug that, my desktop has gone. It's can't detected notebook's own monitor automaticly. I can't see desktop for a while. For getting desktop back, i poked system without stdinput(keyboard and mouse!) I closed my notebook cover and it's going to sleep. After 10 - 15 seconds i opened that cover again, and WOW! Desktop has came back with this crash.

-For notebooks, you must set default output as notebooks own monitor when VGA, HDMI, etc. connectors unplugged. 
-You must not forcing hardware, on power connection events.
-For mobile use please think about batteries. For make this, we need efficent and powerfull applications about CPU frequency and GPU frequency.

-System closing itself, when my GPU's temperature over 114 Celcius with opensource drivers (In the other operating system this temperature between  only 80-85 celcius)

-_--------======= I HAVE LICENSED OPERATING! SYSTEM! BUT I DONT WANT TO USE IT!!!
Before KDE4 this system is more opened. It's going to be more like Gnome. I dont like gnome! No.. I hate it!

I want more efficent, stable, powerfull and long live supported system like every user.
Just like a user...

Best Regards.
Hakan.

-- Backtrace:
Application: Plasma Masaüstü Kabuğu (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f3dd8ec67a0 (LWP 1815))]

Thread 12 (Thread 0x7f3db7ce6700 (LWP 1818)):
#0  0x00007f3dcd5ed034 in __pthread_mutex_lock (mutex=0x7f3db00008b8) at pthread_mutex_lock.c:61
#1  0x00007f3dccadd023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3dccadddfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3dccade429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3dd5985f3e in QEventDispatcherGlib::processEvents (this=0x2d0abb0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f3dd5959cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f3dd5959ef7 in QEventLoop::exec (this=0x7f3db7ce5db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f3dd587127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f3dd593ccbf in QInotifyFileSystemWatcherEngine::run (this=0x2d0b9f0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x2d0b9f0) at thread/qthread_unix.cpp:331
#10 0x00007f3dcd5eaefc in start_thread (arg=0x7f3db7ce6700) at pthread_create.c:304
#11 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f3db5320700 (LWP 1819)):
#0  0x00007f3dd8799773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3dccaddf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3dccade429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3dd5985f3e in QEventDispatcherGlib::processEvents (this=0x2ebe390, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f3dd5959cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f3dd5959ef7 in QEventLoop::exec (this=0x7f3db531fdb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f3dd587127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f3dd593ccbf in QInotifyFileSystemWatcherEngine::run (this=0x2ebdc90) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x2ebdc90) at thread/qthread_unix.cpp:331
#9  0x00007f3dcd5eaefc in start_thread (arg=0x7f3db5320700) at pthread_create.c:304
#10 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f3dab583700 (LWP 1827)):
#0  0x00007f3dd8799773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3dccaddf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3dccade792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3dac061516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f3dccb032b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3dcd5eaefc in start_thread (arg=0x7f3dab583700) at pthread_create.c:304
#6  0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f3dabd84700 (LWP 2093)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x3cdda50) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x3cdda50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x3cdda50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x3cdda50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3dabd83e00, parent=0x2ddc830, th=0x3cdda50) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x3cdda50) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x3cdda50) at thread/qthread_unix.cpp:331
#10 0x00007f3dcd5eaefc in start_thread (arg=0x7f3dabd84700) at pthread_create.c:304
#11 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f3da67c9700 (LWP 2094)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x2d31d80) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x2d31d80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x2d31d80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3da67c8e00, parent=0x2ddc830, th=0x2d31d80) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x2d31d80) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x2d31d80) at thread/qthread_unix.cpp:331
#9  0x00007f3dcd5eaefc in start_thread (arg=0x7f3da67c9700) at pthread_create.c:304
#10 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f3d9ffff700 (LWP 2095)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x296ff20) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x296ff20) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x296ff20) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3d9fffee00, parent=0x2ddc830, th=0x296ff20) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x296ff20) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x296ff20) at thread/qthread_unix.cpp:331
#9  0x00007f3dcd5eaefc in start_thread (arg=0x7f3d9ffff700) at pthread_create.c:304
#10 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f3da5fc8700 (LWP 2096)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x34fe070) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x34fe070) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x34fe070) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x34fe070) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3da5fc7e00, parent=0x2ddc830, th=0x34fe070) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x34fe070) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x34fe070) at thread/qthread_unix.cpp:331
#10 0x00007f3dcd5eaefc in start_thread (arg=0x7f3da5fc8700) at pthread_create.c:304
#11 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f3da57c7700 (LWP 2097)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x7f3da00021a0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x7f3da00021a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x7f3da00021a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x7f3da00021a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3da57c6e00, parent=0x2ddc830, th=0x7f3da00021a0) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x7f3da00021a0) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x7f3da00021a0) at thread/qthread_unix.cpp:331
#10 0x00007f3dcd5eaefc in start_thread (arg=0x7f3da57c7700) at pthread_create.c:304
#11 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f3daddb3700 (LWP 2129)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x3c44da0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x3c44da0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3daddb2e00, parent=0x2ddc830, th=0x3c44da0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x3c44da0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x3c44da0) at thread/qthread_unix.cpp:331
#8  0x00007f3dcd5eaefc in start_thread (arg=0x7f3daddb3700) at pthread_create.c:304
#9  0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f3d9f7fe700 (LWP 2130)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x7f3da00031d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x7f3da00031d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166fe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x7f3da00031d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3d9f7fde00, parent=0x2ddc830, th=0x7f3da00031d0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x7f3da00031d0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x7f3da00031d0) at thread/qthread_unix.cpp:331
#9  0x00007f3dcd5eaefc in start_thread (arg=0x7f3d9f7fe700) at pthread_create.c:304
#10 0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3d9e5ed700 (LWP 2131)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f3dd58741ab in wait (time=18446744073709551615, this=0x2d91b80) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2d684e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3dd166d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ddc830, th=0x35a9110) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3dd166fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2d687e0, th=0x35a9110) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3dd166eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f3d9e5ece00, parent=0x2ddc830, th=0x35a9110) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f3dd166ed5b in ThreadWeaver::Thread::run (this=0x35a9110) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f3dd5873d05 in QThreadPrivate::start (arg=0x35a9110) at thread/qthread_unix.cpp:331
#8  0x00007f3dcd5eaefc in start_thread (arg=0x7f3d9e5ed700) at pthread_create.c:304
#9  0x00007f3dd87a589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3dd8ec67a0 (LWP 1815)):
[KCrash Handler]
#6  0x00007f3dd118d33e in ~QExplicitlySharedDataPointer (this=<optimized out>, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qshareddata.h:161
#7  Solid::Device::~Device (this=<optimized out>, __in_chrg=<optimized out>) at ../../../solid/solid/device.cpp:87
#8  0x00007f3dadfcfee1 in ?? () from /usr/lib/kde4/plasma_engine_hotplug.so
#9  0x00007f3dadfd003c in ?? () from /usr/lib/kde4/plasma_engine_hotplug.so
#10 0x00007f3dadfd2309 in ?? () from /usr/lib/kde4/plasma_engine_hotplug.so
#11 0x00007f3dd596deba in QMetaObject::activate (sender=0x2d09b30, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff248d0b40) at kernel/qobject.cpp:3278
#12 0x00007f3dd118e6c5 in Solid::DeviceNotifier::deviceRemoved (this=<optimized out>, _t1=<optimized out>) at ./devicenotifier.moc:94
#13 0x00007f3dd118f8ad in Solid::DeviceManagerPrivate::_k_deviceRemoved (this=0x2d09b30, udi=...) at ../../../solid/solid/devicemanager.cpp:207
#14 0x00007f3dd1190069 in Solid::DeviceManagerPrivate::qt_metacall (this=0x2d09b30, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff248d0cf0) at ./devicemanager_p.moc:80
#15 0x00007f3dd596deba in QMetaObject::activate (sender=0x2d09d20, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff248d0cf0) at kernel/qobject.cpp:3278
#16 0x00007f3dd11a2895 in Solid::Ifaces::DeviceManager::deviceRemoved (this=<optimized out>, _t1=<optimized out>) at ./ifaces/devicemanager.moc:94
#17 0x00007f3dd11e3166 in slotDeviceRemoved (opath=<optimized out>, this=0x2d09d20) at ../../../solid/solid/backends/upower/upowermanager.cpp:164
#18 Solid::Backends::UPower::UPowerManager::qt_metacall (this=0x2d09d20, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff248d1030) at ./backends/upower/upowermanager.moc:78
#19 0x00007f3dd596deba in QMetaObject::activate (sender=0x2d09d38, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff248d1030) at kernel/qobject.cpp:3278
#20 0x00007f3dd5cc5d8d in QDBusInterfacePrivate::metacall (this=0x2d09280, c=<optimized out>, id=4, argv=0x7fff248d1030) at qdbusinterface.cpp:278
#21 0x00007f3dd5cb20e9 in QDBusConnectionPrivate::deliverCall (this=0x248cb50, object=0x2d09d38, msg=..., metaTypes=..., slotIdx=9) at qdbusintegrator.cpp:942
#22 0x00007f3dd5cbb38f in QDBusCallDeliveryEvent::placeMetaCall (this=<optimized out>, object=<optimized out>) at qdbusintegrator_p.h:103
#23 0x00007f3dd5971a5e in QObject::event (this=0x2d09d38, e=<optimized out>) at kernel/qobject.cpp:1217
#24 0x00007f3dd4d0a474 in notify_helper (e=0x3dc3a80, receiver=0x2d09d38, this=0x2357310) at kernel/qapplication.cpp:4486
#25 QApplicationPrivate::notify_helper (this=0x2357310, receiver=0x2d09d38, e=0x3dc3a80) at kernel/qapplication.cpp:4458
#26 0x00007f3dd4d0f2e1 in QApplication::notify (this=0x2347090, receiver=0x2d09d38, e=0x3dc3a80) at kernel/qapplication.cpp:4365
#27 0x00007f3dd6609466 in KApplication::notify (this=0x2347090, receiver=0x2d09d38, event=0x3dc3a80) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f3dd595aafc in QCoreApplication::notifyInternal (this=0x2347090, receiver=0x2d09d38, event=0x3dc3a80) at kernel/qcoreapplication.cpp:787
#29 0x00007f3dd595e51f in sendEvent (event=0x3dc3a80, receiver=0x2d09d38) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#30 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x22de430) at kernel/qcoreapplication.cpp:1428
#31 0x00007f3dd5985a73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#32 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#33 0x00007f3dccadda5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f3dccade258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f3dccade429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f3dd5985ed6 in QEventDispatcherGlib::processEvents (this=0x22dff40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#37 0x00007f3dd4db210e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#38 0x00007f3dd5959cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#39 0x00007f3dd5959ef7 in QEventLoop::exec (this=0x7fff248d1850, flags=...) at kernel/qeventloop.cpp:201
#40 0x00007f3dd595e789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#41 0x00007f3dd8aa41a3 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#42 0x00007f3dd86e530d in __libc_start_main (main=0x400640, argc=1, ubp_av=0x7fff248d1c38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff248d1c28) at libc-start.c:226
#43 0x0000000000400671 in _start ()

Possible duplicates by query: bug 294036, bug 291844, bug 291066, bug 290475, bug 290426.

Reported using DrKonqi