Bug 284290

Summary:	Nepomuk Server Crashes Upon Loading KDE Plasma
Product:	[Unmaintained] nepomuk	Reporter:	Howard Pearlman <howardpearlman47>
Component:	nepomukserver	Assignee:	Sebastian Trueg <sebastian>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	a22112216, alan.christopher.jenkins, artchizhov, echukwuogor, jadiazs1, jaguarinux, marcelo.escobal, me, thelight9, trueg
Priority:	NOR
Version:	4.7
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi

Description Howard Pearlman 2011-10-17 18:19:08 UTC

Application: nepomukserver (0.2)
KDE Platform Version: 4.7.1 (4.7.1)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:  Starting KDE - had used LXDE, Ubunutu, and Gnome Windows Management Systems previously in this session.  It crashes every time I load KDE.  Using Ubuntu 11.10 (new release).  No problems with other Windows Managers; only KDE.  Running a Thinkpad 410s with 4 gigs rams, SSD drive and and I5 core processor.

- Custom settings of the application:

The crash can be reproduced every time.

-- Backtrace:
Application: Nepomuk Server (nepomukserver), signal: Segmentation fault
[KCrash Handler]
#6  0x00007f3db3bca6ca in XInternAtom () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f3dae85ddfd in DBusConnection::getAccessibilityBusAddress() const () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#8  0x00007f3dae85deb6 in DBusConnection::connectDBus() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#9  0x00007f3dae85e27c in DBusConnection::DBusConnection() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#10 0x00007f3dae8420ff in QSpiAccessibleBridge::QSpiAccessibleBridge() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#11 0x00007f3dae85dae7 in QSpiAccessibleBridgePlugin::create(QString const&) () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#12 0x00007f3db4d03018 in QAccessible::initialize() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#13 0x00007f3db4d03145 in QAccessible::setRootObject(QObject*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#14 0x00007f3db47fb383 in QApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#15 0x00007f3db68d9989 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_nepomukserver.so
#16 0x00007f3db654d30d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#17 0x0000000000400671 in _start ()

Reported using DrKonqi

Comment 1 Alan Jenkins 2011-10-18 09:58:23 UTC

Created attachment 64665 [details]
New crash information added by DrKonqi

nepomukserver (0.2) on KDE Platform 4.7.1 (4.7.1) using Qt 4.7.4

- What I was doing when the application crashed:

Logging in to KDE.

- Custom settings of the application:

Login manager is GDM.

Oddly, I had originally disabled NepoMuk.  But System Settings shows that both NepoMuk and Strigi are enabled (although it also says Strigi is not running).

-- Backtrace (Reduced):
#6  0x00007fef5e9ca6ca in XInternAtom () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007fef59be1dfd in DBusConnection::getAccessibilityBusAddress() const () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#8  0x00007fef59be1eb6 in DBusConnection::connectDBus() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#9  0x00007fef59be227c in DBusConnection::DBusConnection() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#10 0x00007fef59bc60ff in QSpiAccessibleBridge::QSpiAccessibleBridge() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so

Comment 2 Christoph Feck 2011-10-18 12:39:05 UTC

See https://bugs.launchpad.net/ubuntu/+source/qt-at-spi/+bug/877358

Comment 3 Marcelo Escobal 2011-11-02 12:49:52 UTC

Created attachment 65157 [details]
New crash information added by DrKonqi

nepomukserver (0.2) on KDE Platform 4.7.2 (4.7.2) using Qt 4.7.4

- What I was doing when the application crashed:

Starting KDE, using LightDM for login. Gnome and Unity also installed.

-- Backtrace (Reduced):
#7  0x00c062f4 in XInternAtom () from /usr/lib/i386-linux-gnu/libX11.so.6
#8  0x01299f6b in DBusConnection::getAccessibilityBusAddress() const () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#9  0x0129a046 in DBusConnection::connectDBus() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#10 0x0129a46f in DBusConnection::DBusConnection() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#11 0x0127bcb9 in QSpiAccessibleBridge::QSpiAccessibleBridge() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so

Comment 4 Sebastian Trueg 2011-11-02 13:57:09 UTC

*** Bug 285551 has been marked as a duplicate of this bug. ***

Comment 5 Marcelo Escobal 2011-11-02 20:25:23 UTC

Workaround: 
First I uninstalled kaccessible but it didn't change anything.
Then I uninstalled (purged) qt-at-spi.
It works now.


Marcelo.

Comment 6 jaguarinux 2011-11-04 16:31:21 UTC

Created attachment 65236 [details]
New crash information added by DrKonqi

nepomukserver (0.2) on KDE Platform 4.7.2 (4.7.2) using Qt 4.7.4

- What I was doing when the application crashed:
Start session, and crash reporting assintant report the crash 3 times

-- Backtrace (Reduced):
#6  0x00007f4e4576e6ca in XInternAtom () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f4e402a1dfd in DBusConnection::getAccessibilityBusAddress() const () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#8  0x00007f4e402a1eb6 in DBusConnection::connectDBus() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#9  0x00007f4e402a227c in DBusConnection::DBusConnection() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#10 0x00007f4e402860ff in QSpiAccessibleBridge::QSpiAccessibleBridge() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so

Comment 7 Ekeluo Chukwuogor 2011-11-05 07:10:00 UTC

Created attachment 65252 [details]
New crash information added by DrKonqi

nepomukserver (0.2) on KDE Platform 4.7.2 (4.7.2) using Qt 4.7.4

Same experience here. Unity and gnome 3.0 installed on kubuntu 11.10. Crashes instantly on login. Purging kaccessible and qt-at-spi bypassed this for me.

-- Backtrace (Reduced):
#7  0x00dad2f4 in XInternAtom () from /usr/lib/i386-linux-gnu/libX11.so.6
#8  0x02498f6b in DBusConnection::getAccessibilityBusAddress() const () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#9  0x02499046 in DBusConnection::connectDBus() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#10 0x0249946f in DBusConnection::DBusConnection() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#11 0x0247acb9 in QSpiAccessibleBridge::QSpiAccessibleBridge() () from /usr/lib/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so

Comment 8 Howard Pearlman 2011-11-05 20:28:46 UTC

Your solution worked, I uninstalled (purged) qt-at-spi.  Thanks for the solution!

Comment 9 Myriam Schweingruber 2011-11-28 13:43:02 UTC

*** Bug 287485 has been marked as a duplicate of this bug. ***

Comment 10 Sebastian Trueg 2011-12-05 09:21:34 UTC

*** Bug 288250 has been marked as a duplicate of this bug. ***

Comment 11 Sebastian Trueg 2011-12-12 10:09:27 UTC

*** Bug 288656 has been marked as a duplicate of this bug. ***

Comment 12 Christoph Feck 2011-12-12 11:00:19 UTC


*** This bug has been marked as a duplicate of bug 284005 ***