plasma crashed with SIGSEGV in QGraphicsLinearLayout::orientation()

[Olaf Lenz]

Binary package hint: kdebase-workspace

A crash report should be connected to this report.

The crash happens every time since the second time I logged in to KDE 4.
During the first login, I've changed a number of desktop settings, added plasmoids, activated some window manager effects, etc.

When I moved the home directory and created a new, empty one, login is fine again, but as soon as I copy the old one back into place, the crash reoccurs.
I didn't have time so far to try to deduce the specific setting/plasmoid/whatever that caused the crash, but upon request I can try some.

ProblemType: Crash
Architecture: amd64
CrashCounter: 1
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/plasma
Package: kdebase-workspace-bin 4:4.1.1-0ubuntu5
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/plasma
ProcCwd: /home/olenz
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: kdebase-workspace
StacktraceTop:
 QGraphicsLinearLayout::orientation ()
 ?? () from /usr/lib/kde4/plasma_applet_lockout.so
 Plasma::Applet::flushPendingConstraintsEvents ()
 QObject::event () from /usr/lib/libQtCore.so.4
 QGraphicsWidget::event ()
Title: plasma crashed with SIGSEGV in QGraphicsLinearLayout::orientation()
Uname: Linux 2.6.27-2-generic x86_64
UserGroups: adm admin cdrom dialout fuse lpadmin plugdev sambashare

[Jonathan Thomas (echidnaman)]

Could we get a copy of your ~/.kde/share/config/plasma-appletsrc?
I think we can forward this report on to KDE once we have that.
From the backtrace it looks like the Lock/Logout plasmoid is causing the crash..

[Olaf Lenz (olenz)]

Ok, here you go.

[Apport retracing service (apport)]

StacktraceTop:QGraphicsLinearLayout::orientation () from /usr/lib/libQtGui.so.4
LockOut::checkLayout (this=0x2705410)
Plasma::Applet::flushPendingConstraintsEvents (this=0x2705410) at /usr/include/qt4/QtCore/qglobal.h:1919
QObject::event () from /usr/lib/libQtCore.so.4
QGraphicsWidget::event () from /usr/lib/libQtGui.so.4

[Pawel (kraftman-deactivatedaccount)]

After enabling desktop effects plasma (probably) crashes. Everything is white or grey, but desktop is working (I can point to K menu and after click it shows up, but it's white on grey background) cursor remains normal. Ubuntu bug report utility mentioned something about randr crash and I sent bug-report. It's probably bug in the newest nvidia binary blob, because with beta one desktop effects worked well (but performance was horrible...), but I'll try with beta second time, because I upgraded my system so it's possible that problem lays somewhere else.

[Pawel (kraftman-deactivatedaccount)]

It's definitely nvidia fault. With beta 177.78 compositing works well.