Application: plasma-desktop (0.4)
KDE Platform Version: 4.9.5 (Compiled from sources)
Qt Version: 4.8.4
Operating System: Linux 3.4.9-gentoo-gnu_build20120904 x86_64
Distribution: "Gentoo Base System release 2.2"

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

I pressed the "refresh" button in firefox

- Custom settings of the application:

KDE often reports that the normal sound device is not available and it falls back to something called HDMI. After that, I hear no bell in Konsole, however, when I go to system settings->multimedia and test the reportedly unavailable audio device (intel hda), it produces sound.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f661249b780 (LWP 2327))]

Thread 3 (Thread 0x7f65f9e4c700 (LWP 2352)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f66067cc2f2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f6606ac4e60 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f66067cc329 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f6610cf9d96 in start_thread (arg=0x7f65f9e4c700) at pthread_create.c:305
#4  0x00007f660fa8c42d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7f6575741700 (LWP 2358)):
#0  0x00007f660fa83663 in *__GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f660cbac6d6 in g_main_context_poll (n_fds=1, fds=0x7f65640029b0, timeout=-1, context=0x7f65640009a0, priority=<optimized out>) at gmain.c:3440
#2  g_main_context_iterate (context=0x7f65640009a0, block=1, dispatch=1, self=<optimized out>) at gmain.c:3141
#3  0x00007f660cbac7f4 in g_main_context_iteration (context=0x7f65640009a0, may_block=1) at gmain.c:3207
#4  0x00007f66110bfe06 in QEventDispatcherGlib::processEvents (this=0x7f65640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f661108f7b2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f661108fa07 in QEventLoop::exec (this=0x7f6575740db0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f6610f8e157 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#8  0x00007f661106f28f in QInotifyFileSystemWatcherEngine::run (this=0xeec0c0) at io/qfilesystemwatcher_inotify.cpp:256
#9  0x00007f6610f911bc in QThreadPrivate::start (arg=0xeec0c0) at thread/qthread_unix.cpp:338
#10 0x00007f6610cf9d96 in start_thread (arg=0x7f6575741700) at pthread_create.c:305
#11 0x00007f660fa8c42d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f661249b780 (LWP 2327)):
[KCrash Handler]
#6  log1 (error=<optimized out>, delta=<optimized out>, x=<optimized out>) at ../sysdeps/ieee754/dbl-64/e_pow.c:253
#7  __ieee754_pow_sse2 (x=<optimized out>, y=0) at ../sysdeps/ieee754/dbl-64/e_pow.c:88
#8  0x00007f660db163ac in __pow (x=<optimized out>, y=<optimized out>) at w_pow.c:28
#9  0x00007f6611e1b83f in KIconEffect::toGamma (img=..., value=2) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kdeui/icons/kiconeffect.cpp:517
#10 0x00007f6611e1c860 in KIconEffect::apply (this=<optimized out>, img=..., effect=3, value=<optimized out>, col=..., col2=..., trans=false) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kdeui/icons/kiconeffect.cpp:244
#11 0x00007f6611e1c988 in KIconEffect::apply (this=0xaf86b8, pixmap=..., effect=<optimized out>, value=0.699999988, col=..., col2=..., trans=false) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kdeui/icons/kiconeffect.cpp:299
#12 0x00007f6611e1cc6f in KIconEffect::apply (this=<optimized out>, pixmap=..., group=0, state=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kdeui/icons/kiconeffect.cpp:270
#13 0x00007f65fafc3e92 in AbstractTaskItem::drawTask (this=0x1e10d50, painter=0x7fff7c217ad0, option=<optimized out>) at /var/tmp/portage/kde-base/plasma-workspace-4.9.5/work/plasma-workspace-4.9.5/plasma/desktop/applets/tasks/abstracttaskitem.cpp:705
#14 0x00007f661080071d in _q_paintItem (item=<optimized out>, painter=0x7fff7c217ad0, option=0xa54d88, widget=0x1c56a10, useWindowOpacity=<optimized out>, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4335
#15 0x00007f6610817c84 in QGraphicsScenePrivate::drawItemHelper (this=0xa54b60, item=0x1e10d60, painter=0x7fff7c217ad0, option=0xa54d88, widget=0x1c56a10, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4431
#16 0x00007f661081a0cb in QGraphicsScenePrivate::draw (this=0xa54b60, item=0x1e10d60, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, transformPtr=0x7fff7c215f70, exposedRegion=0x1c38cd8, widget=0x1c56a10, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4966
#17 0x00007f661081b155 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0xa54b60, item=0x1e10d60, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, exposedRegion=0x1c38cd8, widget=0x1c56a10, parentOpacity=<optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4857
#18 0x00007f661081a1a0 in QGraphicsScenePrivate::draw (this=0xa54b60, item=0xf462c0, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, transformPtr=0x7fff7c2165c0, exposedRegion=0x1c38cd8, widget=0x1c56a10, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4996
#19 0x00007f661081b155 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0xa54b60, item=0xf462c0, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, exposedRegion=0x1c38cd8, widget=0x1c56a10, parentOpacity=<optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4857
#20 0x00007f661081a1a0 in QGraphicsScenePrivate::draw (this=0xa54b60, item=0xd25150, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, transformPtr=0x7fff7c216c10, exposedRegion=0x1c38cd8, widget=0x1c56a10, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4996
#21 0x00007f661081b155 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0xa54b60, item=0xd25150, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, exposedRegion=0x1c38cd8, widget=0x1c56a10, parentOpacity=<optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4857
#22 0x00007f661081a1a0 in QGraphicsScenePrivate::draw (this=0xa54b60, item=0xdf85c0, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, transformPtr=0x7fff7c217260, exposedRegion=0x1c38cd8, widget=0x1c56a10, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4996
#23 0x00007f661081b155 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0xa54b60, item=0xdf85c0, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, exposedRegion=0x1c38cd8, widget=0x1c56a10, parentOpacity=<optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4857
#24 0x00007f661081b9a0 in QGraphicsScenePrivate::drawItems (this=0xa54b60, painter=0x7fff7c217ad0, viewTransform=0x7fff7c2177a0, exposedRegion=0x1c38cd8, widget=0x1c56a10) at graphicsview/qgraphicsscene.cpp:4739
#25 0x00007f6610834680 in QGraphicsView::paintEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsview.cpp:3471
#26 0x00007f66102798be in QWidget::event (this=0x1c38770, event=0x7fff7c218470) at kernel/qwidget.cpp:8532
#27 0x00007f661060f936 in QFrame::event (this=0x1c38770, e=0x7fff7c218470) at widgets/qframe.cpp:557
#28 0x00007f661083593b in QGraphicsView::viewportEvent (this=0x1c38770, event=0x7fff7c218470) at graphicsview/qgraphicsview.cpp:2866
#29 0x00007f6611090e08 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x1c56a10, event=0x7fff7c218470) at kernel/qcoreapplication.cpp:1056
#30 0x00007f661022909f in notify_helper (e=0x7fff7c218470, receiver=0x1c56a10, this=0xabe5c0) at kernel/qapplication.cpp:4558
#31 QApplicationPrivate::notify_helper (this=0xabe5c0, receiver=0x1c56a10, e=0x7fff7c218470) at kernel/qapplication.cpp:4534
#32 0x00007f661022dea3 in QApplication::notify (this=0xab85a0, receiver=0x1c56a10, e=0x7fff7c218470) at kernel/qapplication.cpp:4423
#33 0x00007f6611e74fe6 in KApplication::notify (this=0xab85a0, receiver=0x1c56a10, event=0x7fff7c218470) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kdeui/kernel/kapplication.cpp:311
#34 0x00007f6611090c7c in QCoreApplication::notifyInternal (this=0xab85a0, receiver=0x1c56a10, event=0x7fff7c218470) at kernel/qcoreapplication.cpp:946
#35 0x00007f66102753f6 in sendSpontaneousEvent (event=0x7fff7c218470, receiver=0x1c56a10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#36 QWidgetPrivate::drawWidget (this=0x1c56a40, pdev=0x1ab0770, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x1c3c4b0) at kernel/qwidget.cpp:5598
#37 0x00007f661027606f in QWidgetPrivate::paintSiblingsRecursive (this=0x1c38850, pdev=0x1ab0770, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x1c3c4b0) at kernel/qwidget.cpp:5807
#38 0x00007f661027512c in QWidgetPrivate::drawWidget (this=0x1c38850, pdev=0x1ab0770, rgn=..., offset=..., flags=<optimized out>, sharedPainter=0x0, backingStore=0x1c3c4b0) at kernel/qwidget.cpp:5651
#39 0x00007f661043bda2 in QWidgetBackingStore::sync (this=0x1c3c4b0) at painting/qbackingstore.cpp:1373
#40 0x00007f661026c150 in QWidgetPrivate::syncBackingStore (this=0x1c38850) at kernel/qwidget.cpp:1896
#41 0x00007f661027a006 in QWidget::event (this=0x1c38770, event=0x1add780) at kernel/qwidget.cpp:8679
#42 0x00007f661060f936 in QFrame::event (this=0x1c38770, e=0x1add780) at widgets/qframe.cpp:557
#43 0x00007f6610691b8b in QAbstractScrollArea::event (this=0x1c38770, e=0x1add780) at widgets/qabstractscrollarea.cpp:996
#44 0x00007f66102290d4 in notify_helper (e=0x1add780, receiver=0x1c38770, this=0xabe5c0) at kernel/qapplication.cpp:4562
#45 QApplicationPrivate::notify_helper (this=0xabe5c0, receiver=0x1c38770, e=0x1add780) at kernel/qapplication.cpp:4534
#46 0x00007f661022dea3 in QApplication::notify (this=0xab85a0, receiver=0x1c38770, e=0x1add780) at kernel/qapplication.cpp:4423
#47 0x00007f6611e74fe6 in KApplication::notify (this=0xab85a0, receiver=0x1c38770, event=0x1add780) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kdeui/kernel/kapplication.cpp:311
#48 0x00007f6611090c7c in QCoreApplication::notifyInternal (this=0xab85a0, receiver=0x1c38770, event=0x1add780) at kernel/qcoreapplication.cpp:946
#49 0x00007f661109452a in sendEvent (event=0x1add780, receiver=0x1c38770) at kernel/qcoreapplication.h:231
#50 QCoreApplicationPrivate::sendPostedEvents (receiver=0x1c38770, event_type=77, data=0x9c72b0) at kernel/qcoreapplication.cpp:1570
#51 0x00007f66108106aa in dispatchPendingUpdateRequests (this=0x1c38850) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:200
#52 QGraphicsScenePrivate::_q_processDirtyItems (this=0xa54b60) at graphicsview/qgraphicsscene.cpp:515
#53 0x00007f6610810801 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at .moc/release-shared/moc_qgraphicsscene.cpp:107
#54 QGraphicsScene::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/release-shared/moc_qgraphicsscene.cpp:86
#55 0x00007f66110a9d56 in QObject::event (this=0x9e2c40, e=<optimized out>) at kernel/qobject.cpp:1194
#56 0x00007f6610817379 in QGraphicsScene::event (this=0x9e2c40, event=0x1d64820) at graphicsview/qgraphicsscene.cpp:3565
#57 0x00007f66102290d4 in notify_helper (e=0x1d64820, receiver=0x9e2c40, this=0xabe5c0) at kernel/qapplication.cpp:4562
#58 QApplicationPrivate::notify_helper (this=0xabe5c0, receiver=0x9e2c40, e=0x1d64820) at kernel/qapplication.cpp:4534
#59 0x00007f661022dea3 in QApplication::notify (this=0xab85a0, receiver=0x9e2c40, e=0x1d64820) at kernel/qapplication.cpp:4423
#60 0x00007f6611e74fe6 in KApplication::notify (this=0xab85a0, receiver=0x9e2c40, event=0x1d64820) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kdeui/kernel/kapplication.cpp:311
#61 0x00007f6611090c7c in QCoreApplication::notifyInternal (this=0xab85a0, receiver=0x9e2c40, event=0x1d64820) at kernel/qcoreapplication.cpp:946
#62 0x00007f661109452a in sendEvent (event=0x1d64820, receiver=0x9e2c40) at kernel/qcoreapplication.h:231
#63 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9c72b0) at kernel/qcoreapplication.cpp:1570
#64 0x00007f66110bf973 in sendPostedEvents () at kernel/qcoreapplication.h:236
#65 postEventSourceDispatch (s=0xabff50) at kernel/qeventdispatcher_glib.cpp:279
#66 0x00007f660cbac3f2 in g_main_dispatch (context=0xac2340) at gmain.c:2539
#67 g_main_context_dispatch (context=0xac2340) at gmain.c:3075
#68 0x00007f660cbac738 in g_main_context_iterate (context=0xac2340, block=1, dispatch=1, self=<optimized out>) at gmain.c:3146
#69 0x00007f660cbac7f4 in g_main_context_iteration (context=0xac2340, may_block=1) at gmain.c:3207
#70 0x00007f66110bfd9f in QEventDispatcherGlib::processEvents (this=0xabfb60, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#71 0x00007f66102cbbce in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#72 0x00007f661108f7b2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#73 0x00007f661108fa07 in QEventLoop::exec (this=0x7fff7c21a230, flags=...) at kernel/qeventloop.cpp:204
#74 0x00007f6611094825 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#75 0x00007f660183ae73 in kdemain (argc=1, argv=0xa23400) at /var/tmp/portage/kde-base/plasma-workspace-4.9.5/work/plasma-workspace-4.9.5/plasma/desktop/shell/main.cpp:120
#76 0x000000000040755c in launch (argc=1, _name=0xa079e8 "/usr/bin/plasma-desktop", args=<optimized out>, cwd=0x0, envc=<optimized out>, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40b666 "0") at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kinit/kinit.cpp:726
#77 0x00000000004081d7 in handle_launcher_request (sock=<optimized out>, who=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kinit/kinit.cpp:1218
#78 0x00000000004088d3 in handle_requests (waitForPid=0) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kinit/kinit.cpp:1411
#79 0x000000000040954f in main (argc=2, argv=0x7fff7c21b458, envp=0x7fff7c21b470) at /var/tmp/portage/kde-base/kdelibs-4.9.5/work/kdelibs-4.9.5/kinit/kinit.cpp:1899

Reported using DrKonqi