Application: plasma-desktop (0.3)
KDE Platform Version: 4.3.90 (KDE 4.3.90 (KDE 4.4 RC1))
Qt Version: 4.6.0
Operating System: Linux 2.6.31-18-generic x86_64
Distribution: Ubuntu 9.10

-- Information about the crash:
I updated to 4.4RC using Kubuntu beta repositories and plasma crashes on startup after login, so the screen gets black.

The crash can be reproduced every time.

 -- Backtrace:
Application: Spazio di lavoro di Plasma (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  0x00007f4ffe0ed357 in Plasma::Wallpaper::setUsingRenderingCache (this=0x16ab440, useCache=<value optimized out>) at ../../plasma/wallpaper.cpp:351
#6  0x00007f4fea0c1e07 in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#7  0x00007f4ffe0ed1ed in Plasma::Wallpaper::restore (this=0x16ab440, config=...) at ../../plasma/wallpaper.cpp:264
#8  0x00007f4ffe026a23 in Plasma::Applet::paint (this=0x166fba0, painter=0x7fff53e5f0c0, option=0x139b0a8, widget=<value optimized out>) at ../../plasma/applet.cpp:1346
#9  0x00007f5004981d9a in _q_paintItem (item=<value optimized out>, painter=0x7fff53e5f0c0, option=0x139b0a8, widget=0x16ac950, useWindowOpacity=<value optimized out>, 
    painterStateProtection=<value optimized out>) at graphicsview/qgraphicsscene.cpp:4193
#10 0x00007f5004994484 in QGraphicsScenePrivate::drawItemHelper (this=<value optimized out>, item=0x166fbb0, painter=0x7fff53e5f0c0, option=0x139b0a8, widget=0x16ac950, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4262
#11 0x00007f50049967c5 in QGraphicsScenePrivate::draw (this=<value optimized out>, item=0x166fbb0, painter=0x7fff53e5f0c0, viewTransform=<value optimized out>, transformPtr=<value optimized out>, 
    exposedRegion=<value optimized out>, widget=0x16ac950, opacity=<value optimized out>, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true)
    at graphicsview/qgraphicsscene.cpp:4736
#12 0x00007f500499710a in QGraphicsScenePrivate::drawSubtreeRecursive (this=<value optimized out>, item=0x166fbb0, painter=0x7fff53e5f0c0, viewTransform=0x7fff53e5eeb0, exposedRegion=0x16b0f80, 
    widget=0x16ac950, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4669
#13 0x00007f500499782c in QGraphicsScenePrivate::drawItems (this=0x139ae50, painter=0x7fff53e5f0c0, viewTransform=0x7fff53e5eeb0, exposedRegion=0x16b0f80, widget=0x16ac950)
    at graphicsview/qgraphicsscene.cpp:4565
#14 0x00007f50049b6695 in QGraphicsView::paintEvent (this=0x170b780, event=<value optimized out>) at graphicsview/qgraphicsview.cpp:3352
#15 0x00007f50043d1175 in QWidget::event (this=0x170b780, event=0x7fff53e5f960) at kernel/qwidget.cpp:8120
#16 0x00007f5004774e16 in QFrame::event (this=0x170b780, e=0x7fff53e5f960) at widgets/qframe.cpp:557
#17 0x00007f50049b1a0b in QGraphicsView::viewportEvent (this=0x170b780, event=0x7fff53e5f960) at graphicsview/qgraphicsview.cpp:2747
#18 0x00007f50051d5467 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x16ac950, event=0x7fff53e5f960) at kernel/qcoreapplication.cpp:819
#19 0x00007f500437be5c in QApplicationPrivate::notify_helper (this=0x12ce480, receiver=0x16ac950, e=0x7fff53e5f960) at kernel/qapplication.cpp:4238
#20 0x00007f500438248d in QApplication::notify (this=0x12b7d30, receiver=0x16ac950, e=0x7fff53e5f960) at kernel/qapplication.cpp:4125
#21 0x00007f500571ae16 in KApplication::notify (this=0x12b7d30, receiver=0x16ac950, event=0x7fff53e5f960) at ../../kdeui/kernel/kapplication.cpp:302
#22 0x00007f50051d604c in QCoreApplication::notifyInternal (this=0x12b7d30, receiver=0x16ac950, event=0x7fff53e5f960) at kernel/qcoreapplication.cpp:704
#23 0x00007f50043d972d in QCoreApplication::sendSpontaneousEvent (this=0x1711d20, pdev=<value optimized out>, rgn=..., offset=<value optimized out>, flags=<value optimized out>, sharedPainter=0x0, 
    backingStore=0x130bd90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#24 QWidgetPrivate::drawWidget (this=0x1711d20, pdev=<value optimized out>, rgn=..., offset=<value optimized out>, flags=<value optimized out>, sharedPainter=0x0, backingStore=0x130bd90)
    at kernel/qwidget.cpp:5322
#25 0x00007f50043da3b8 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=2, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0x130bd90) at kernel/qwidget.cpp:5435
#26 0x00007f50043d948a in QWidgetPrivate::drawWidget (this=0x16b0ac0, pdev=<value optimized out>, rgn=..., offset=<value optimized out>, flags=<value optimized out>, sharedPainter=0x0, 
    backingStore=0x130bd90) at kernel/qwidget.cpp:5371
#27 0x00007f500458fed5 in QWidgetBackingStore::sync (this=0x130bd90) at painting/qbackingstore.cpp:1289
#28 0x00007f50043cab60 in QWidgetPrivate::syncBackingStore (this=0x16b0ac0) at kernel/qwidget.cpp:1662
#29 0x00007f50043d1885 in QWidget::event (this=0x170b780, event=0x1708ec0) at kernel/qwidget.cpp:8266
#30 0x00007f5004774e16 in QFrame::event (this=0x170b780, e=0x1708ec0) at widgets/qframe.cpp:557
#31 0x00007f50047ff8db in QAbstractScrollArea::event (this=0x170b780, e=0x1708ec0) at widgets/qabstractscrollarea.cpp:985
#32 0x00007f500437be8c in QApplicationPrivate::notify_helper (this=0x12ce480, receiver=0x170b780, e=0x1708ec0) at kernel/qapplication.cpp:4242
#33 0x00007f500438248d in QApplication::notify (this=0x12b7d30, receiver=0x170b780, e=0x1708ec0) at kernel/qapplication.cpp:4125
#34 0x00007f500571ae16 in KApplication::notify (this=0x12b7d30, receiver=0x170b780, event=0x1708ec0) at ../../kdeui/kernel/kapplication.cpp:302
#35 0x00007f50051d604c in QCoreApplication::notifyInternal (this=0x12b7d30, receiver=0x170b780, event=0x1708ec0) at kernel/qcoreapplication.cpp:704
#36 0x00007f50051d87c7 in QCoreApplication::sendEvent (receiver=0x170b780, event_type=<value optimized out>, data=0x124cd20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#37 QCoreApplicationPrivate::sendPostedEvents (receiver=0x170b780, event_type=<value optimized out>, data=0x124cd20) at kernel/qcoreapplication.cpp:1345
#38 0x00007f500498f1ba in QGraphicsViewPrivate::dispatchPendingUpdateRequests (this=0x139ae50) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:178
#39 QGraphicsScenePrivate::_q_emitUpdated (this=0x139ae50) at graphicsview/qgraphicsscene.cpp:380
#40 0x00007f500499e932 in QGraphicsScene::qt_metacall (this=0x1395f70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x139a140) at .moc/release-shared/moc_qgraphicsscene.cpp:128
#41 0x00007f4ffe04ed75 in Plasma::Corona::qt_metacall (this=0x16ab440, _c=QMetaObject::ReadProperty, _id=10, _a=0x0) at ./corona.moc:107
#42 0x00007f4ffa818da0 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x00007f50051e5d19 in QObject::event (this=0x1395f70, e=0x134f940) at kernel/qobject.cpp:1260
#44 0x00007f500499a970 in QGraphicsScene::event (this=0x1395f70, event=0x134f940) at graphicsview/qgraphicsscene.cpp:3450
#45 0x00007f500437be8c in QApplicationPrivate::notify_helper (this=0x12ce480, receiver=0x1395f70, e=0x134f940) at kernel/qapplication.cpp:4242
#46 0x00007f500438248d in QApplication::notify (this=0x12b7d30, receiver=0x1395f70, e=0x134f940) at kernel/qapplication.cpp:4125
#47 0x00007f500571ae16 in KApplication::notify (this=0x12b7d30, receiver=0x1395f70, event=0x134f940) at ../../kdeui/kernel/kapplication.cpp:302
#48 0x00007f50051d604c in QCoreApplication::notifyInternal (this=0x12b7d30, receiver=0x1395f70, event=0x134f940) at kernel/qcoreapplication.cpp:704
#49 0x00007f50051d87c7 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x124cd20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#50 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x124cd20) at kernel/qcoreapplication.cpp:1345
#51 0x00007f50051ffae3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#52 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#53 0x00007f5000813bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#54 0x00007f5000817598 in ?? () from /lib/libglib-2.0.so.0
#55 0x00007f50008176c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#56 0x00007f50051ff623 in QEventDispatcherGlib::processEvents (this=0x124e370, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#57 0x00007f500442a2fe in QGuiEventDispatcherGlib::processEvents (this=0x16ab440, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#58 0x00007f50051d4972 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#59 0x00007f50051d4d4c in QEventLoop::exec (this=0x7fff53e618b0, flags=) at kernel/qeventloop.cpp:201
#60 0x00007f50051d8a8b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#61 0x00007f4ffa81e4cf in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#62 0x0000000000406fb8 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a4a1 "0") at ../../kinit/kinit.cpp:706
#63 0x0000000000407c70 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1198
#64 0x0000000000408121 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1391
#65 0x0000000000408dea in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1830

Reported using DrKonqi