VLC crashed when attempting to play a demo Dirac file

[goto]

Binary package hint: vlc

vlc crashed with SIGSEGV in QAccessible::updateAccessibility() when attempting to play a dirac file located at http://dirac.kw.bbc.co.uk/download/video/maybefinal/diracpromo-tr1000.ts . It seems these types of problems are already known about in the VideoLAN forums (http://forum.videolan.org/viewtopic.php?f=12&t=50544) but just in case, I still submitted the bug here.

ProblemType: Crash
Architecture: amd64
CrashCounter: 1
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/vlc
NonfreeKernelModules: nvidia ath_hal
Package: vlc-nox 0.9.4-1ubuntu1
ProcAttrCurrent: unconfined
ProcCmdline: vlc
ProcEnviron:
 PATH=/home/username/bin:/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: vlc
StacktraceTop:
 QAccessible::updateAccessibility ()
 QAbstractSlider::setValue ()
 InputSlider::setPosition ()
 InputSlider::qt_metacall ()
 QMetaObject::activate ()
Title: vlc crashed with SIGSEGV in QAccessible::updateAccessibility()
Uname: Linux 2.6.27-7-generic x86_64
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video

[Apport retracing service (apport)]

StacktraceTop:QAccessible::updateAccessibility () from /usr/lib/libQtGui.so.4
QAbstractSlider::setValue () from /usr/lib/libQtGui.so.4
PLSelector (this=0x0, p=<value optimized out>, _p_intf=<value optimized out>,
?? ()
?? ()

[arno_b (arno.b)]

I have problem to play the given movie with vlc (0.9.4-1ubuntu3).
Can you try to get a backtrace by following the instructions on https://wiki.ubuntu.com/DebuggingProgramCrash and on http://live.gnome.org/GettingTraces/Details.
(install packages 'vlc-dbg' and 'gdb' and see here for backtrace https://wiki.ubuntu.com/Backtrace)

Marked as incomplete until we have a backtrace.

[goto (gotolaunchpad)]

This is all I could get out of the backtrace. I could provide the whole output, including all vlc debug info printed if that would help.

Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0x7f27897729fc]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x17) [0x7f2789772b77]
#2 /usr/lib/libX11.so.6 [0x7f278a34d8c0]
#3 /usr/lib/libX11.so.6(XESetCloseDisplay+0x43) [0x7f278a32f903]
#4 /usr/lib/libGL.so.1 [0x7f275708cf02]

[arno_b (arno.b)]

Which video output do you have in vlc? (look in 'General video settings' into the frame of parameters)

[goto (gotolaunchpad)]

It was set to OpenGL. Once I changed it to default, the video did play. Thanks for that suggestion. I still wonder though if the program should segfault when that is set to OpenGL. The description above says I use the nvidia driver, but more specifically, I'd like to mention it is an NVIDIA GeForce 6800XT, if that helps.

[arno_b (arno.b)]

I let this report open since it is not normal that vlc crashes.
However, it have no crash using the openGL ouput with an ATI card.

[Hew (hew)]

There have been a large number of bugfixes with the latest VLC release, 1.0.0~rc2-1ubuntu1. Can you reproduce your issue with this latest version? You can test this in Ubuntu Karmic, or Ubuntu Jaunty with the MOTU Media PPA at https://launchpad.net/~motumedia/+archive/ppa . Thanks in advance.

[goto (gotolaunchpad)]

Please reopen if you still want to answer.