Application: plasma-desktop (0.4) KDE Platform Version: 4.7.1 (4.7.1) Qt Version: 4.7.4 Operating System: Linux 3.0.0-11-generic x86_64 Distribution: Ubuntu oneiric (development branch) -- Information about the crash: Right-click on New Activity tab > Add panel > Default panel > BOOM. Hope this helps.... The crash can be reproduced every time. -- Backtrace: Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault [Current thread is 1 (Thread 0x7f8a476007a0 (LWP 3166))] Thread 5 (Thread 0x7f8a2ec0d700 (LWP 3168)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f8a410d3fe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4 #2 0x00007f8a410d4019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4 #3 0x00007f8a3bf74efc in start_thread (arg=0x7f8a2ec0d700) at pthread_create.c:304 #4 0x00007f8a46ee689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #5 0x0000000000000000 in ?? () Thread 4 (Thread 0x7f8a2afde700 (LWP 3170)): #0 0xffffffffff60017b in ?? () #1 0x00007f8a2afddad0 in ?? () #2 0x00007fff1e3ff7e7 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) Thread 3 (Thread 0x7f8a2a2b2700 (LWP 3171)): #0 0xffffffffff60017b in ?? () #1 0x00007f8a2a2b1ad0 in ?? () #2 0x00007fff1e3ff7e7 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) Thread 2 (Thread 0x7f8a18040700 (LWP 3176)): #0 0x00007f8a46eda773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007f8a3b467f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f8a3b468792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f8a18b1e516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007f8a3b48d2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f8a3bf74efc in start_thread (arg=0x7f8a18040700) at pthread_create.c:304 #6 0x00007f8a46ee689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #7 0x0000000000000000 in ?? () Thread 1 (Thread 0x7f8a476007a0 (LWP 3166)): [KCrash Handler] #6 QGraphicsLayoutItem::setParentLayoutItem (this=0x2629ee0, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007f8a43a09bc4 in QGraphicsGridLayout::removeAt (this=0x26291b0, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007f8a28618bb3 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x2625f60) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #9 0x00007f8a286190cc in SystemTray::TaskArea::qt_metacall (this=0x2625f60, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff1e393180) at ./taskarea.moc:93 #10 0x00007f8a440b6eba in QMetaObject::activate (sender=0x2626860, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3278 #11 0x00007f8a440ba789 in QObject::event (this=0x2626860, e=<optimized out>) at kernel/qobject.cpp:1181 #12 0x00007f8a43454424 in notify_helper (e=0x7fff1e3936e0, receiver=0x2626860, this=0x8c4090) at kernel/qapplication.cpp:4486 #13 QApplicationPrivate::notify_helper (this=0x8c4090, receiver=0x2626860, e=0x7fff1e3936e0) at kernel/qapplication.cpp:4458 #14 0x00007f8a43459291 in QApplication::notify (this=0x8b43a0, receiver=0x2626860, e=0x7fff1e3936e0) at kernel/qapplication.cpp:4365 #15 0x00007f8a44d52266 in KApplication::notify (this=0x8b43a0, receiver=0x2626860, event=0x7fff1e3936e0) at ../../kdeui/kernel/kapplication.cpp:311 #16 0x00007f8a440a3afc in QCoreApplication::notifyInternal (this=0x8b43a0, receiver=0x2626860, event=0x7fff1e3936e0) at kernel/qcoreapplication.cpp:787 #17 0x00007f8a440d0d62 in sendEvent (event=0x7fff1e3936e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215 #18 QTimerInfoList::activateTimers (this=0x8c8730) at kernel/qeventdispatcher_unix.cpp:603 #19 0x00007f8a440ce514 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184 #20 0x00007f8a3b467a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #21 0x00007f8a3b468258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #22 0x00007f8a3b468429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #23 0x00007f8a440ceed6 in QEventDispatcherGlib::processEvents (this=0x858f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422 #24 0x00007f8a434fc07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204 #25 0x00007f8a440a2cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149 #26 0x00007f8a440a2ef7 in QEventLoop::exec (this=0x7fff1e393970, flags=...) at kernel/qeventloop.cpp:201 #27 0x00007f8a440a7789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064 #28 0x00007f8a471e51a3 in kdemain (argc=1, argv=0x7fff1e393d58) at ../../../../plasma/desktop/shell/main.cpp:120 #29 0x00007f8a46e2630d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff1e393d58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff1e393d48) at libc-start.c:226 #30 0x0000000000400671 in _start () Reported using DrKonqi
[Comment from a bug report cleaner] This could be somehow related to bug 282738 / bug 282552, as the situation triggering the crash is the same and the SystemTray widget is also involved. Regards
Created attachment 64530 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.1 (4.7.1) using Qt 4.7.2 - What I was doing when the application crashed: I was adding a new default panel on the upper window field -- Backtrace (Reduced): #6 0x00007f146eb87904 in QGraphicsLayoutItem::setParentLayoutItem (this=0x39ffcf0, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007f146eb5be84 in QGraphicsGridLayout::removeAt (this=0x38990b0, index=<value optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007f1459cb8243 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x34a7e50) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #9 0x00007f1459cb86dc in SystemTray::TaskArea::qt_metacall (this=0x34a7e50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffff774f400) at ./taskarea.moc:93 [...] #11 0x00007f146f1f31c9 in QObject::event (this=0x34a7dd0, e=<value optimized out>) at kernel/qobject.cpp:1190
*** Bug 284313 has been marked as a duplicate of this bug. ***
Created attachment 64722 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.1 (4.7.1) using Qt 4.7.4 - What I was doing when the application crashed: Addition new default panel - Unusual behavior I noticed: On restart all previous desktop settings (pager settins, panel, background etc) have been lost -- Backtrace (Reduced): #7 QGraphicsLayoutItem::setParentLayoutItem (this=0xb135bd8, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #8 0xb6103f47 in QGraphicsGridLayout::removeAt (this=0xb16fe78, index=0) at graphicsview/qgraphicsgridlayout.cpp:583 #9 0xaf1bd825 in SystemTray::TaskArea::relayoutHiddenTasks (this=0xb2a7e78) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #10 0xaf1bdd34 in SystemTray::TaskArea::qt_metacall (this=0xb2a7e78, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfcafef4) at ./taskarea.moc:93 #11 0xb6590b7d in metacall (argv=0xbfcafef4, idx=27, cl=QMetaObject::InvokeMetaMethod, object=0xb2a7e78) at kernel/qmetaobject.cpp:237
Created attachment 64780 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.1 (4.7.1) using Qt 4.7.4 Plasma crashes on adding new default panel -- Backtrace (Reduced): #7 QGraphicsLayoutItem::setParentLayoutItem (this=0xa8c97e0, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #8 0xb6004f47 in QGraphicsGridLayout::removeAt (this=0xb107ea0, index=0) at graphicsview/qgraphicsgridlayout.cpp:583 #9 0xaeef9825 in SystemTray::TaskArea::relayoutHiddenTasks (this=0xb376868) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #10 0xaeef9d34 in SystemTray::TaskArea::qt_metacall (this=0xb376868, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbff56584) at ./taskarea.moc:93 #11 0xb6491b7d in metacall (argv=0xbff56584, idx=27, cl=QMetaObject::InvokeMetaMethod, object=0xb376868) at kernel/qmetaobject.cpp:237
*** Bug 284690 has been marked as a duplicate of this bug. ***
*** Bug 284705 has been marked as a duplicate of this bug. ***
Created attachment 65238 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.2 (4.7.2) using Qt 4.7.4 - What I was doing when the application crashed: I was trying to add a new panel: Panel Options -> Add Panel -> Default Panel After clicking on "Default Panel" plasma desktop crashed. -- Backtrace (Reduced): #7 QGraphicsLayoutItem::setParentLayoutItem (this=0x9f15520, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #8 0x01d00f47 in QGraphicsGridLayout::removeAt (this=0x9f2a698, index=0) at graphicsview/qgraphicsgridlayout.cpp:583 #9 0x04526825 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x9f277b0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #10 0x04526d34 in SystemTray::TaskArea::qt_metacall (this=0x9f277b0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbf9c62b4) at ./taskarea.moc:93 #11 0x01426b7d in metacall (argv=0xbf9c62b4, idx=27, cl=QMetaObject::InvokeMetaMethod, object=0x9f277b0) at kernel/qmetaobject.cpp:237
Created attachment 65291 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.2 (4.7.2) using Qt 4.7.4 - What I was doing when the application crashed: I tried to add a new panel by clicking tskbr -- Backtrace (Reduced): #7 QGraphicsLayoutItem::setParentLayoutItem (this=0xc6f05f8, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #8 0xb5fa8f47 in QGraphicsGridLayout::removeAt (this=0x9536c60, index=0) at graphicsview/qgraphicsgridlayout.cpp:583 #9 0xb0b0c825 in SystemTray::TaskArea::relayoutHiddenTasks (this=0xc713410) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #10 0xb0b0cd34 in SystemTray::TaskArea::qt_metacall (this=0xc713410, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbffb1664) at ./taskarea.moc:93 #11 0xb6435b7d in metacall (argv=0xbffb1664, idx=27, cl=QMetaObject::InvokeMetaMethod, object=0xc713410) at kernel/qmetaobject.cpp:237
Git commit 2d1deb4234aa3d43e2a7cc48fc1f6936bd2ff97c by Aaron Seigo. Committed on 09/11/2011 at 17:11. Pushed by aseigo into branch 'KDE/4.7'. since the widget is being deleted, remove it from the collection BUG:286197 BUG:286195 BUG:264750 BUG:277367 BUG:280326 BUG:280072 BUG:282552 BUG:283061 BUG:284603 BUG:286177 BUG:286181 M +2 -2 plasma/generic/applets/systemtray/core/task.cpp http://commits.kde.org/kde-workspace/2d1deb4234aa3d43e2a7cc48fc1f6936bd2ff97c
Git commit c4adbef26fc61a93c36981ed81cb741e00d63043 by Aaron Seigo. Committed on 09/11/2011 at 17:11. Pushed by aseigo into branch 'master'. since the widget is being deleted, remove it from the collection BUG:286197 BUG:286195 BUG:264750 BUG:277367 BUG:280326 BUG:280072 BUG:282552 BUG:283061 BUG:284603 BUG:286177 BUG:286181 M +2 -2 plasma/generic/applets/systemtray/core/task.cpp http://commits.kde.org/kde-workspace/c4adbef26fc61a93c36981ed81cb741e00d63043
*** Bug 285799 has been marked as a duplicate of this bug. ***
*** Bug 287323 has been marked as a duplicate of this bug. ***
Created attachment 65989 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.7.4 - What I was doing when the application crashed: Running X11/KDE as root. Adding new pannel, plasma crashes -- Backtrace (Reduced): #6 0x00007f2c360b9f0e in QGraphicsLayoutItem::setParentLayoutItem (this=0x17a5ba0, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007f2c3609d37c in QGraphicsGridLayout::removeAt (this=0x17368b0, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007f2c1c1f6650 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x17340c0) at /var/tmp/portage/kde-base/plasma-workspace-4.7.3-r4/work/plasma-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #9 0x00007f2c1c1f7cf4 in SystemTray::TaskArea::qt_metacall (this=0x17340c0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffd3f312b0) at /var/tmp/portage/kde-base/plasma-workspace-4.7.3-r4/work/plasma-workspace-4.7.3_build/plasma/generic/applets/systemtray/taskarea.moc:93 [...] #11 0x00007f2c368a7379 in QObject::event (this=0x1734040, e=0x0) at kernel/qobject.cpp:1181
Created attachment 66114 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.8.0 - What I was doing when the application crashed: I just installed Fedora 16 with KDE in 64 bit and had then installed the proper NVIDIA driver when Plasma would not display any open applications. I could open the app launcher and run apps but they were all underneath Plasma. When I killed Plasma then I could use my apps, also when I was running Plasma the was no task bar. It was when I tried to add a Plasma Workspace that Plasma crashed and then everytime I restarted it it would crash again. - Unusual behavior I noticed: -- Backtrace (Reduced): #6 0x00007f5aa353e204 in QGraphicsLayoutItem::setParentLayoutItem (this=0x3b4f120, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:851 #7 0x00007f5aa3512824 in QGraphicsGridLayout::removeAt (this=0x3bb57c0, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007f5a84f94da3 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x3bb3290) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:422 [...] #10 0x00007f5aa3de5719 in QObject::event (this=0x3bb34d0, e=<optimized out>) at kernel/qobject.cpp:1156 #11 0x00007f5aa2f4a6f4 in notify_helper (e=0x7fff956bc770, receiver=0x3bb34d0, this=0x19192f0) at kernel/qapplication.cpp:4518
*** Bug 288096 has been marked as a duplicate of this bug. ***
*** Bug 288804 has been marked as a duplicate of this bug. ***
Created attachment 67184 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.7.4 - What I was doing when the application crashed: Adding a new default panel, to the second monitor. -- Backtrace (Reduced): #6 QGraphicsLayoutItem::setParentLayoutItem (this=0x2b44720, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007fa2f5aa3bd4 in QGraphicsGridLayout::removeAt (this=0x2b935a0, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007fa2d84aebb3 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x2b3c0a0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #9 0x00007fa2d84af0cc in SystemTray::TaskArea::qt_metacall (this=0x2b3c0a0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff37dab790) at ./taskarea.moc:93 [...] #11 0x00007fa2f6154789 in QObject::event (this=0x2b3c6e0, e=<optimized out>) at kernel/qobject.cpp:1181
Created attachment 67185 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.7.4 - What I was doing when the application crashed: Adding a new default panel, to the second monitor. -- Backtrace (Reduced): #6 QGraphicsLayoutItem::setParentLayoutItem (this=0x2b44720, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007fa2f5aa3bd4 in QGraphicsGridLayout::removeAt (this=0x2b935a0, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007fa2d84aebb3 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x2b3c0a0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #9 0x00007fa2d84af0cc in SystemTray::TaskArea::qt_metacall (this=0x2b3c0a0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff37dab790) at ./taskarea.moc:93 [...] #11 0x00007fa2f6154789 in QObject::event (this=0x2b3c6e0, e=<optimized out>) at kernel/qobject.cpp:1181
Created attachment 67186 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.7.4 - What I was doing when the application crashed: Adding a new default panel, to the second monitor. -- Backtrace (Reduced): #6 QGraphicsLayoutItem::setParentLayoutItem (this=0x2b44720, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007fa2f5aa3bd4 in QGraphicsGridLayout::removeAt (this=0x2b935a0, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007fa2d84aebb3 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x2b3c0a0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #9 0x00007fa2d84af0cc in SystemTray::TaskArea::qt_metacall (this=0x2b3c0a0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff37dab790) at ./taskarea.moc:93 [...] #11 0x00007fa2f6154789 in QObject::event (this=0x2b3c6e0, e=<optimized out>) at kernel/qobject.cpp:1181
Created attachment 67556 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.7.4 - What I was doing when the application crashed: Adding a new default panel to the desktop, crash, auto restart shell, then ok until i try adding again. repeatable. -- Backtrace (Reduced): #6 QGraphicsLayoutItem::setParentLayoutItem (this=0x3890710, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007f4784f94bd4 in QGraphicsGridLayout::removeAt (this=0x3773130, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 #8 0x00007f476ea01bb3 in SystemTray::TaskArea::relayoutHiddenTasks (this=0x3770a00) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:422 #9 0x00007f476ea020cc in SystemTray::TaskArea::qt_metacall (this=0x3770a00, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff535cfc70) at ./taskarea.moc:93 [...] #11 0x00007f4785645789 in QObject::event (this=0x3770ae0, e=<optimized out>) at kernel/qobject.cpp:1181
Created attachment 67677 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.7.4 - What I was doing when the application crashed: rebooting system, upon login i get the crash and have no panel rest of system appears ok, alt-click to add default panel crashes again. -- Backtrace (Reduced): #6 QGraphicsLayoutItem::setParentLayoutItem (this=0x85c3020, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007fa85516cbd4 in QGraphicsGridLayout::removeAt (this=0x8868020, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 [...] #11 0x00007fa85581d789 in QObject::event (this=0x85a65c0, e=<optimized out>) at kernel/qobject.cpp:1181 #12 0x00007fa854bb7424 in notify_helper (e=0x7fffd56a1300, receiver=0x85a65c0, this=0x14a6770) at kernel/qapplication.cpp:4486 #13 QApplicationPrivate::notify_helper (this=0x14a6770, receiver=0x85a65c0, e=0x7fffd56a1300) at kernel/qapplication.cpp:4458
Created attachment 67678 [details] New crash information added by DrKonqi plasma-desktop (0.4) on KDE Platform 4.7.3 (4.7.3) using Qt 4.7.4 - What I was doing when the application crashed: rebooting system, upon login i get the crash and have no panel rest of system appears ok, alt-click to add default panel crashes again. -- Backtrace (Reduced): #6 QGraphicsLayoutItem::setParentLayoutItem (this=0x85c3020, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856 #7 0x00007fa85516cbd4 in QGraphicsGridLayout::removeAt (this=0x8868020, index=<optimized out>) at graphicsview/qgraphicsgridlayout.cpp:583 [...] #11 0x00007fa85581d789 in QObject::event (this=0x85a65c0, e=<optimized out>) at kernel/qobject.cpp:1181 #12 0x00007fa854bb7424 in notify_helper (e=0x7fffd56a1300, receiver=0x85a65c0, this=0x14a6770) at kernel/qapplication.cpp:4486 #13 QApplicationPrivate::notify_helper (this=0x14a6770, receiver=0x85a65c0, e=0x7fffd56a1300) at kernel/qapplication.cpp:4458
*** Bug 296247 has been marked as a duplicate of this bug. ***