Application: kwin (4.8.5 (4.8.5))
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-48-generic x86_64
Distribution: Ubuntu 12.04.2 LTS

-- Information about the crash:
- What I was doing when the application crashed:

i was changing window managers to find one i liked. this is when the crash notifications started. using ultimate edition 3.5 ona dell inspiron laptop

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ffca82fa780 (LWP 9741))]

Thread 4 (Thread 0x7ffc89905700 (LWP 9743)):
#0  0x00007ffca7b0e8cd in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007ffc9acad8cf in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffc9ac72ba4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffc9ac72fd6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffc9ac7349a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffc90447406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007ffc9ac949e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffc9c406e9a in start_thread (arg=0x7ffc89905700) at pthread_create.c:308
#8  0x00007ffca7b1bccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7ffc73fff700 (LWP 9747)):
#0  0x00007ffca7b15033 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007ffca330d366 in qt_safe_select (nfds=31, fdread=0x7ffc68000ac8, fdwrite=0x7ffc68000d60, fdexcept=0x7ffc68000ff8, orig_timeout=<optimized out>) at kernel/qcore_unix.cpp:83
#2  0x00007ffca33127b2 in QEventDispatcherUNIXPrivate::doSelect (this=0x7ffc68000910, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007ffca3312ca3 in QEventDispatcherUNIX::processEvents (this=0x7ffc680008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#4  0x00007ffca32dfc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ffca32dfed7 in QEventLoop::exec (this=0x7ffc73ffedd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007ffca31defa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007ffca32bf9ff in QInotifyFileSystemWatcherEngine::run (this=0x1fb4b80) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007ffca31e1fcb in QThreadPrivate::start (arg=0x1fb4b80) at thread/qthread_unix.cpp:298
#9  0x00007ffc9c406e9a in start_thread (arg=0x7ffc73fff700) at pthread_create.c:308
#10 0x00007ffca7b1bccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ffc737fe700 (LWP 9748)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffca45d0222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007ffca45d0259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007ffc9c406e9a in start_thread (arg=0x7ffc737fe700) at pthread_create.c:308
#4  0x00007ffca7b1bccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffca82fa780 (LWP 9741)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007ffca7eb392a in KWin::Deleted::copyToDeleted (this=0x2291fa0, c=0x22e19a0) at ../../kwin/deleted.cpp:78
#8  0x00007ffca7eb3bad in KWin::Deleted::create (c=0x22e19a0) at ../../kwin/deleted.cpp:53
#9  0x00007ffca7e95570 in KWin::Unmanaged::release (this=0x22e19a0) at ../../kwin/unmanaged.cpp:85
#10 0x00007ffca7e2dced in KWin::Workspace::~Workspace (this=0x1bf2dc0, __in_chrg=<optimized out>) at ../../kwin/workspace.cpp:533
#11 0x00007ffca7e2e559 in KWin::Workspace::~Workspace (this=0x1bf2dc0, __in_chrg=<optimized out>) at ../../kwin/workspace.cpp:563
#12 0x00007ffca7e46987 in KWin::Application::lostSelection (this=0x7fff3fb9c260) at ../../kwin/main.cpp:351
#13 0x00007ffca32f5281 in QMetaObject::activate (sender=0x7fff3fb9c278, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#14 0x00007ffca765c903 in KSelectionOwner::filterEvent (this=0x7fff3fb9c278, ev_P=<optimized out>) at ../../kdeui/util/kmanagerselection.cpp:224
#15 0x00007ffca75f78b6 in publicx11Event (e=0x7fff3fb9bf50, this=<optimized out>) at ../../kdeui/kernel/kapplication.cpp:918
#16 KApplication::x11EventFilter (this=<optimized out>, _event=0x7fff3fb9bf50) at ../../kdeui/kernel/kapplication.cpp:930
#17 0x00007ffca26d2b85 in qt_x11EventFilter (ev=0x7fff3fb9bf50) at kernel/qapplication_x11.cpp:441
#18 qt_x11EventFilter (ev=0x7fff3fb9bf50) at kernel/qapplication_x11.cpp:429
#19 0x00007ffca26e1f98 in QApplication::x11ProcessEvent (this=0x7fff3fb9c260, event=0x7fff3fb9bf50) at kernel/qapplication_x11.cpp:3444
#20 0x00007ffca270cb3a in QEventDispatcherX11::processEvents (this=0x1843ad0, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#21 0x00007ffca32dfc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#22 0x00007ffca32dfed7 in QEventLoop::exec (this=0x7fff3fb9c1a0, flags=...) at kernel/qeventloop.cpp:204
#23 0x00007ffca32e4f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#24 0x00007ffca7e47c36 in kdemain (argc=<optimized out>, argv=<optimized out>) at ../../kwin/main.cpp:541
#25 0x00007ffca7a4976d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=2, ubp_av=0x7fff3fb9c988, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff3fb9c978) at libc-start.c:226
#26 0x0000000000400661 in _start ()

Possible duplicates by query: bug 320106, bug 314430, bug 313828, bug 309934, bug 309862.

Reported using DrKonqi