Application: kwin (4.10.2)
KDE Platform Version: 4.10.2
Qt Version: 4.8.4
Operating System: Linux 3.8.0-19-generic x86_64
Distribution: Ubuntu 13.04

-- Information about the crash:
- What I was doing when the application crashed:
I restarted the lighdm to again login in system and wanted to start an app with Alt+F2. It was after the whole night of beeing on and laptop lid closed (only screen off - not suspend or hibernate). Screen was corrupted and a restarted the lightdm on textual console (Ctrl+Alt+F1). I noticed that kde4 process took about 78% of my 16GB of RAM.

- Unusual behavior I noticed:
Corrupted screen prior to new logon system and trying to start launcher with Alt+F2

-- 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 0x7fb8451567c0 (LWP 3070))]

Thread 2 (Thread 0x7fb81bfff700 (LWP 3078)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb841269e77 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fb841269ea9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fb83859ff8e in start_thread (arg=0x7fb81bfff700) at pthread_create.c:311
#4  0x00007fb844979e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fb8451567c0 (LWP 3070)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007fb844d1e8ab in KWin::EffectsHandlerImpl::buildQuads (this=0x1a9e8e0, w=0x1a9ea70, quadList=...) at ../../kwin/effects.cpp:329
#8  0x00007fb844d003ac in KWin::Scene::Window::buildQuads (this=0x1a9e830, force=<optimized out>) at ../../kwin/scene.cpp:621
#9  0x00007fb844d1cb91 in KWin::EffectWindowImpl::buildQuads (this=<optimized out>, force=<optimized out>) at ../../kwin/effects.cpp:1582
#10 0x00007fb844cbe0a5 in KWin::Shadow::updateShadow (this=0x1903140) at ../../kwin/shadow.cpp:216
#11 0x00007fb844cfc71f in KWin::Toplevel::getShadow (this=0x1baf6f0) at ../../kwin/toplevel.cpp:346
#12 0x00007fb844cbb34a in KWin::Toplevel::propertyNotifyEvent (this=this@entry=0x1baf6f0, e=e@entry=0x7fff426d4b40) at ../../kwin/events.cpp:1667
#13 0x00007fb844cbb389 in KWin::Client::propertyNotifyEvent (this=0x1baf6f0, e=0x7fff426d4b40) at ../../kwin/events.cpp:827
#14 0x00007fb844cba868 in KWin::Client::windowEvent (this=0x1baf6f0, e=e@entry=0x7fff426d4b40) at ../../kwin/events.cpp:598
#15 0x00007fb844cbb69b in KWin::Workspace::workspaceEvent (this=0x15bc910, e=e@entry=0x7fff426d4b40) at ../../kwin/events.cpp:288
#16 0x00007fb844cb0568 in KWin::Application::x11EventFilter (this=0x7fff426d50a0, e=0x7fff426d4b40) at ../../kwin/main.cpp:362
#17 0x00007fb83f1980cc in qt_x11EventFilter (ev=0x7fff426d4b40) at kernel/qapplication_x11.cpp:441
#18 qt_x11EventFilter (ev=0x7fff426d4b40) at kernel/qapplication_x11.cpp:429
#19 0x00007fb83f1a6170 in QApplication::x11ProcessEvent (this=0x7fff426d50a0, event=event@entry=0x7fff426d4b40) at kernel/qapplication_x11.cpp:3458
#20 0x00007fb83f1d2b39 in QEventDispatcherX11::processEvents (this=0x1482f20, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#21 0x00007fb83fd8538f in QEventLoop::processEvents (this=this@entry=0x7fff426d4db0, flags=...) at kernel/qeventloop.cpp:149
#22 0x00007fb83fd85618 in QEventLoop::exec (this=this@entry=0x7fff426d4db0, flags=...) at kernel/qeventloop.cpp:204
#23 0x00007fb83fd8acf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#24 0x00007fb83f12affc in QApplication::exec () at kernel/qapplication.cpp:3828
#25 0x00007fb844cb002a in kdemain (argc=3, argv=0x7fff426d51e8) at ../../kwin/main.cpp:537
#26 0x00007fb8448a1ea5 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=3, ubp_av=0x7fff426d51e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff426d51d8) at libc-start.c:260
#27 0x0000000000400701 in _start ()

This bug may be a duplicate of or related to bug 299582.

Possible duplicates by query: bug 318734, bug 318328, bug 315477, bug 315144, bug 313765.

Reported using DrKonqi