Application: kwin (4.5.95 (4.6 RC2))
KDE Platform Version: 4.5.95 (4.6 RC2)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-24-generic i686
Distribution: Ubuntu 10.10

-- Information about the crash:
Kubuntu 10.10, KDE 4.5.95 from beta ppa.

- What I was doing when the application crashed:
I was fiddling around in the Display settings window to try to determine where the changes to there get saved, and when I set Primary Output to my only display output (LVDS1), KWin crashed and the interface behaved as if I had two screens horizontally next to eachother. Yakuake no longer dropped down as it should and the horizontal mouse speed suggested my desktop area was very wide.

I could not reproduce it afterwards.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78b69f0 (LWP 3341))]

Thread 2 (Thread 0xb4ac7b70 (LWP 3346)):
#0  0x00ba9416 in __kernel_vsyscall ()
#1  0x0038a4dc in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x007e0d9d in __pthread_cond_wait (cond=0x122c290, mutex=0x122c278) at forward.c:139
#3  0x01128877 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x12271a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x011288c1 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x12271a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x00385cc9 in start_thread (arg=0xb4ac7b70) at pthread_create.c:304
#6  0x007d369e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb78b69f0 (LWP 3341)):
[KCrash Handler]
#7  0x00000000 in ?? ()
#8  0x055b695b in sample_2d_nearest (ctx=0x861d610, tObj=0x8684360, n=1, texcoords=0xbf943718, lambda=0xbf94360c, rgba=0xbf9435fc) at swrast/s_texfilter.c:1078
#9  sample_nearest_2d (ctx=0x861d610, tObj=0x8684360, n=1, texcoords=0xbf943718, lambda=0xbf94360c, rgba=0xbf9435fc) at swrast/s_texfilter.c:1303
#10 0x0564f7f8 in fetch_texel_deriv (ctx=0x861d610, texcoord=0xbf943718, texdx=0xbf947d1c, texdy=0xbf947efc, lodBias=0, unit=0, color=0xbf943728) at swrast/s_fragprog.c:122
#11 0x0558d740 in fetch_texel (ctx=0x861d610, program=0x89bef98, machine=0x864b33c) at program/prog_execute.c:398
#12 _mesa_execute_program (ctx=0x861d610, program=0x89bef98, machine=0x864b33c) at program/prog_execute.c:1721
#13 0x0564fae8 in run_program (ctx=0x861d610, span=0xbf947adc) at swrast/s_fragprog.c:209
#14 _swrast_exec_fragment_program (ctx=0x861d610, span=0xbf947adc) at swrast/s_fragprog.c:265
#15 0x055a812f in shade_texture_span (ctx=<value optimized out>, span=0xbf947adc) at swrast/s_span.c:997
#16 0x055a92d1 in _swrast_write_rgba_span (ctx=0x861d610, span=0xbf947adc) at swrast/s_span.c:1163
#17 0x055c207a in general_triangle (ctx=0x861d610, v0=0xb4d86020, v1=0xb4d86208, v2=0xb4d867c0) at swrast/s_tritemp.h:819
#18 0x0559dedf in _swrast_validate_triangle (ctx=0x861d610, v0=0xb4d86020, v1=0xb4d86208, v2=0xb4d867c0) at swrast/s_context.c:366
#19 0x0559d0cd in _swrast_Triangle (ctx=0x861d610, v0=0xb4d86020, v1=0xb4d86208, v2=0xb4d867c0) at swrast/s_context.c:709
#20 0x055ccdbf in triangle_rgba (ctx=0x861d610, e0=0, e1=1, e2=4) at swrast_setup/ss_tritmp.h:176
#21 0x0556cb13 in _tnl_render_poly_elts (ctx=0x861d610, start=0, count=4, flags=48) at tnl/t_vb_rendertmp.h:352
#22 0x0556d134 in _tnl_RenderClippedPolygon (ctx=0x861d610, elts=0xbf94894c, n=4) at tnl/t_vb_render.c:245
#23 0x055664d7 in clip_quad_4 (ctx=<value optimized out>, v0=<value optimized out>, v1=1, v2=2, v3=3, mask=8 '\b') at tnl/t_vb_cliptmp.h:310
#24 0x05568a66 in clip_render_quads_verts (ctx=0x861d610, start=0, count=4, flags=55) at tnl/t_vb_rendertmp.h:383
#25 0x0556d298 in run_render (ctx=0x861d610, stage=0x8f5c208) at tnl/t_vb_render.c:321
#26 0x05561193 in _tnl_run_pipeline (ctx=0x861d610) at tnl/t_pipeline.c:153
#27 0x0548ad0d in intelRunPipeline (ctx=0x861d610) at intel_tris.c:1075
#28 0x05561fe6 in _tnl_draw_prims (ctx=0x861d610, arrays=0x864e9c4, prim=0x864d398, nr_prims=1, ib=0x0, min_index=0, max_index=3) at tnl/t_draw.c:478
#29 0x055623b9 in _tnl_vbo_draw_prims (ctx=0x861d610, arrays=0x864e9c4, prim=0x864d398, nr_prims=1, ib=0x0, index_bounds_valid=1 '\001', min_index=0, max_index=3) at tnl/t_draw.c:384
#30 0x0555a754 in vbo_exec_vtx_flush (exec=0x864d260, unmap=1 '\001') at vbo/vbo_exec_draw.c:384
#31 0x05556377 in vbo_exec_FlushVertices_internal (ctx=0x0, unmap=252 '\374') at vbo/vbo_exec_api.c:876
#32 0x05557f50 in vbo_exec_FlushVertices (ctx=0x861d610, flags=1) at vbo/vbo_exec_api.c:910
#33 0x054acb21 in _mesa_PopAttrib () at main/attrib.c:887
#34 0x0019e492 in KWin::PaintClipper::Iterator::~Iterator (this=0xbf948e58, __in_chrg=<value optimized out>) at ../../../kwin/lib/kwineffects.cpp:873
#35 0x001a84e8 in KWin::renderGLGeometry (region=..., count=4, vertices=0x8542f80, texture=0x863ea90, color=0x0, dim=2, stride=0) at ../../../kwin/lib/kwinglutils.cpp:188
#36 0x00472176 in KWin::SceneOpenGL::Window::renderQuads (this=0x8a1cf18, region=..., quads=...) at ../../kwin/scene_opengl.cpp:1672
#37 0x0047a269 in KWin::SceneOpenGL::Window::performPaint (this=0x8a1cf18, mask=<value optimized out>, region=..., data=...) at ../../kwin/scene_opengl.cpp:1553
#38 0x00463ff6 in KWin::Scene::finalDrawWindow (this=0x8b9ea40, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/scene.cpp:332
#39 0x00486583 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:247
#40 0x0019e65d in KWin::Effect::drawWindow (this=0x86832f0, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#41 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#42 0x0019e65d in KWin::Effect::drawWindow (this=0x86127b8, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#43 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#44 0x0019e65d in KWin::Effect::drawWindow (this=0x865ba00, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#45 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#46 0x0019e65d in KWin::Effect::drawWindow (this=0x8e166a0, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#47 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#48 0x0019e65d in KWin::Effect::drawWindow (this=0x8687730, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#49 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#50 0x0019e65d in KWin::Effect::drawWindow (this=0x8685220, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#51 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#52 0x0019e65d in KWin::Effect::drawWindow (this=0x8e16300, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#53 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#54 0x0019e65d in KWin::Effect::drawWindow (this=0x8ea2d58, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#55 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#56 0x0019e65d in KWin::Effect::drawWindow (this=0x8e105b0, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#57 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#58 0x0019e65d in KWin::Effect::drawWindow (this=0x86133b0, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#59 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#60 0x0019e65d in KWin::Effect::drawWindow (this=0x8ef5a98, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#61 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#62 0x0019e65d in KWin::Effect::drawWindow (this=0x8e17250, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#63 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#64 0x0019e65d in KWin::Effect::drawWindow (this=0x8b82ee8, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#65 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#66 0x0019e65d in KWin::Effect::drawWindow (this=0x8689a98, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#67 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#68 0x0019e65d in KWin::Effect::drawWindow (this=0x8683d60, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:262
#69 0x00486607 in KWin::EffectsHandlerImpl::drawWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:243
#70 0x00462c0d in KWin::Scene::finalPaintWindow (this=0x8b9ea40, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/scene.cpp:323
#71 0x00486683 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:204
#72 0x0019e75d in KWin::Effect::paintWindow (this=0x86832f0, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:242
#73 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#74 0x047461a3 in KWin::DashboardEffect::paintWindow (this=0x86127b8, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/dashboard/dashboard.cpp:100
#75 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#76 0x047628ab in KWin::LogoutEffect::paintWindow (this=0x865ba00, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:198
#77 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#78 0x04769159 in KWin::PresentWindowsEffect::paintWindow (this=0x8e16698, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:379
#79 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#80 0x0475af8e in KWin::FadeEffect::paintWindow (this=0x8687730, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/fade/fade.cpp:160
#81 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#82 0x0474fa7a in KWin::DesktopGridEffect::paintWindow (this=0x8685218, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:400
#83 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#84 0x0478b6f2 in KWin::SlideEffect::paintWindow (this=0x8e162f8, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/slide/slide.cpp:165
#85 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#86 0x0473d886 in KWin::BoxSwitchEffect::paintWindow (this=0x8ea2d58, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:241
#87 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#88 0x0019e75d in KWin::Effect::paintWindow (this=0x8e105b0, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:242
#89 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#90 0x0477f1e4 in KWin::ScaleInEffect::paintWindow (this=0x86133b0, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/scalein/scalein.cpp:59
#91 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#92 0x04767e97 in KWin::MinimizeAnimationEffect::paintWindow (this=0x8ef5a98, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/minimizeanimation/minimizeanimation.cpp:103
#93 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#94 0x04791eaa in KWin::SlidingPopupsEffect::paintWindow (this=0x8e17250, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/slidingpopups/slidingpopups.cpp:127
#95 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#96 0x04761466 in KWin::LoginEffect::paintWindow (this=0x8b82ee8, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/login/login.cpp:69
#97 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#98 0x04758991 in KWin::DimScreenEffect::paintWindow (this=0x8689a98, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/effects/dimscreen/dimscreen.cpp:88
#99 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#100 0x0019e75d in KWin::Effect::paintWindow (this=0x8683d60, w=0x8ef91e0, mask=33, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:242
#101 0x00486707 in KWin::EffectsHandlerImpl::paintWindow (this=0x8658430, w=0x8ef91e0, mask=33, region=..., data=...) at ../../kwin/effects.cpp:200
#102 0x0046420c in KWin::Scene::paintWindow (this=0x8b9ea40, w=0x8a1cf18, mask=33, region=..., quads=...) at ../../kwin/scene.cpp:317
#103 0x00465a5d in KWin::Scene::paintGenericScreen (this=0x8b9ea40, orig_mask=<value optimized out>) at ../../kwin/scene.cpp:214
#104 0x004732e5 in KWin::SceneOpenGL::paintGenericScreen (this=0x8b9ea40, mask=<value optimized out>, data=...) at ../../kwin/scene_opengl.cpp:908
#105 0x00462d00 in KWin::Scene::finalPaintScreen (this=0x8b9ea40, mask=32, region=..., data=...) at ../../kwin/scene.cpp:178
#106 0x0048677c in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:173
#107 0x047ce729 in KWin::StartupFeedbackEffect::paintScreen (this=0x86832e8, mask=32, region=..., data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:166
#108 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#109 0x0019e7d6 in KWin::Effect::paintScreen (this=0x86127b8, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#110 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#111 0x04762ca6 in KWin::LogoutEffect::paintScreen (this=0x865ba00, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:207
#112 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#113 0x0476906f in KWin::PresentWindowsEffect::paintScreen (this=0x8e16698, mask=32, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:205
#114 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#115 0x0019e7d6 in KWin::Effect::paintScreen (this=0x8687730, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#116 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#117 0x0474b5f2 in KWin::DesktopGridEffect::paintScreen (this=0x8685218, mask=32, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:155
#118 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#119 0x0478c092 in KWin::SlideEffect::paintScreen (this=0x8e162f8, mask=32, region=..., data=...) at ../../../kwin/effects/slide/slide.cpp:86
#120 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#121 0x04744c3f in KWin::BoxSwitchEffect::paintScreen (this=0x8ea2d58, mask=32, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:143
#122 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#123 0x0019e7d6 in KWin::Effect::paintScreen (this=0x8e105b0, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#124 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#125 0x0019e7d6 in KWin::Effect::paintScreen (this=0x86133b0, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#126 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#127 0x0019e7d6 in KWin::Effect::paintScreen (this=0x8ef5a98, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#128 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#129 0x0019e7d6 in KWin::Effect::paintScreen (this=0x8e17250, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#130 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#131 0x0019e7d6 in KWin::Effect::paintScreen (this=0x8b82ee8, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#132 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#133 0x0019e7d6 in KWin::Effect::paintScreen (this=0x8689a98, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#134 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#135 0x04798709 in KWin::ZoomEffect::paintScreen (this=0x8683d58, mask=32, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:341
#136 0x00486800 in KWin::EffectsHandlerImpl::paintScreen (this=0x8658430, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#137 0x004644e4 in KWin::Scene::paintScreen (this=0x8b9ea40, mask=0xbf94c164, region=0xbf94c210) at ../../kwin/scene.cpp:137
#138 0x0047ae3a in KWin::SceneOpenGL::paint (this=0x8b9ea40, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:771
#139 0x0045f237 in KWin::Workspace::performCompositing (this=0x85f7148) at ../../kwin/composite.cpp:448
#140 0x013a3504 in QObject::event (this=0x85f7148, e=0xbf9435fc) at kernel/qobject.cpp:1183
#141 0x019fcfdc in QApplicationPrivate::notify_helper (this=0x853f960, receiver=0x85f7148, e=0xbf94c750) at kernel/qapplication.cpp:4396
#142 0x01a0304e in QApplication::notify (this=0xbf94ca74, receiver=0x85f7148, e=0xbf94c750) at kernel/qapplication.cpp:3798
#143 0x00db3f8a in KApplication::notify (this=0xbf94ca74, receiver=0x85f7148, event=0xbf94c750) at ../../kdeui/kernel/kapplication.cpp:311
#144 0x003e85bf in KWin::Application::notify (this=0xbf94ca74, o=0x85f7148, e=0xbf94c750) at ../../kwin/main.cpp:376
#145 0x01390b3b in QCoreApplication::notifyInternal (this=0xbf94ca74, receiver=0x85f7148, event=0xbf94c750) at kernel/qcoreapplication.cpp:732
#146 0x013c2ad6 in sendEvent (this=0x8540308) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#147 QTimerInfoList::activateTimers (this=0x8540308) at kernel/qeventdispatcher_unix.cpp:602
#148 0x013c2c37 in QEventDispatcherUNIX::processEvents (this=0x853f668, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#149 0x01ac00d2 in QEventDispatcherX11::processEvents (this=0x853f668, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#150 0x0138f609 in QEventLoop::processEvents (this=0xbf94c9a4, flags=) at kernel/qeventloop.cpp:149
#151 0x0138fa8a in QEventLoop::exec (this=0xbf94c9a4, flags=...) at kernel/qeventloop.cpp:201
#152 0x0139400f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#153 0x019fbe07 in QApplication::exec () at kernel/qapplication.cpp:3672
#154 0x003eb5b0 in kdemain (argc=1, argv=0xbf94ccf4) at ../../kwin/main.cpp:542
#155 0x080485ab in main (argc=1, argv=0xbf94ccf4) at kwin_dummy.cpp:3

Reported using DrKonqi