Hi Pris,

Seg faulting in the OpenGL driver on cow.osg is failing to clear a
very low bar indeed, the OSG is dispatching very simple OpenGL data
and commands for the driver to deal with and really shouldn't fail.
But fail it has.  Try looking for a different OpenGL driver.

FYI, I develop under Kubuntu with a combination of the ATI and NVIdia
drivers without problems, the cow.osg model is very simple and has
never caused me problems.  Even drivers from Intel normally work with
cow.osg and these have a bad reputation for quality so the problem you
are seeing is really appalling.

Robert.

On 11 February 2012 04:44, Preet <[email protected]> wrote:
> Hiya,
>
> I'm brand new to OSG and tried opening up a couple of files in
> osgviewer from the included data sets.
> * cessna.osg opens up fine and I can rotate/zoom/pan the view as expected
> * cow.osg starts up and then instantly seg faults (ie, note that
> cow.osg has some texturing)
>
> However if I pass the --SingleThreaded argument to osgviewer, I can
> view cow.osg just fine. I'm using OSG 3.0.1 with Qt 4.8 on Ubuntu
> 11.10. I've attached the stack trace for the seg fault as well. Does
> anyone know what's going on? Any advice would be appreciated.
>
>
> Regards,
>
> Pris
>
> ==============================================================
>
> #0 0x0257e33f in ?? ()
> #1 0x00e70f5c in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
> #2 0x00e7113c in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
> #3 0x00e21ddd in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
> #4 0x00e1de4b in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
> #5 0x00e1e185 in draw_vbo () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
> #6 0x00de842e in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
> #7 0x00dea5ed in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
> #8 0x013a3919 in st_draw_vbo () from /usr/lib/i386-linux-gnu/dri/libgallium.so
> #9 0x01040cd4 in vbo_save_playback_vertex_list () from
> /usr/lib/i386-linux-gnu/dri/libdricore.so
> #10 0x00f73b56 in ?? () from /usr/lib/i386-linux-gnu/dri/libdricore.so
> #11 0x00f77671 in _mesa_CallList () from
> /usr/lib/i386-linux-gnu/dri/libdricore.so
> #12 0x005fe6e8 in osgUtil::RenderLeaf::render(osg::RenderInfo&,
> osgUtil::RenderLeaf*) () from /usr/lib/libosgUtil.so.80
> #13 0x005f8a8c in
> osgUtil::RenderBin::drawImplementation(osg::RenderInfo&,
> osgUtil::RenderLeaf*&) () from /usr/lib/libosgUtil.so.80
> #14 0x00603f8b in
> osgUtil::RenderStage::drawImplementation(osg::RenderInfo&,
> osgUtil::RenderLeaf*&) () from /usr/lib/libosgUtil.so.80
> #15 0x005f8c20 in osgUtil::RenderBin::draw(osg::RenderInfo&,
> osgUtil::RenderLeaf*&) () from /usr/lib/libosgUtil.so.80
> #16 0x006042bd in osgUtil::RenderStage::drawInner(osg::RenderInfo&,
> osgUtil::RenderLeaf*&, bool&) () from /usr/lib/libosgUtil.so.80
> #17 0x006031b9 in osgUtil::RenderStage::draw(osg::RenderInfo&,
> osgUtil::RenderLeaf*&) () from /usr/lib/libosgUtil.so.80
> #18 0x0060f913 in osgUtil::SceneView::draw() () from /usr/lib/libosgUtil.so.80
> #19 0x00729658 in osgViewer::Renderer::draw() () from
> /usr/lib/libosgViewer.so.80
> #20 0x00728535 in
> osgViewer::Renderer::operator()(osg::GraphicsContext*) () from
> /usr/lib/libosgViewer.so.80
> #21 0x00290968 in osg::GraphicsContext::runOperations() () from
> /usr/lib/libosg.so.80
> #22 0x002928cb in
> osg::RunOperations::operator()(osg::GraphicsContext*) () from
> /usr/lib/libosg.so.80
> #23 0x00292ad6 in osg::GraphicsOperation::operator()(osg::Object*) ()
> from /usr/lib/libosg.so.80
> #24 0x002dfecf in osg::OperationThread::run() () from /usr/lib/libosg.so.80
> #25 0x00292b78 in osg::GraphicsThread::run() () from /usr/lib/libosg.so.80
> #26 0x00134e5e in
> OpenThreads::ThreadPrivateActions::StartThread(void*) () from
> /usr/lib/libOpenThreads.so.14
> #27 0x00a1ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
> #28 0x0096e0ce in clone () from /lib/i386-linux-gnu/libc.so.6
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