On Thu, 2007-07-19 at 12:29 -0500, Curtis Olson wrote: > For about 2 weeks now I'm getting a FlightGear crash deep in the OSG > internals on my laptop. I was hoping it would be a transient issue in > OSG and clear itself up, but so far that is not the case. The same > code and versions of everything run just fine on my desktop. I've got > the most current OSG, SimGear, and FlightGear updated from CVS/SVN > head. I've done make clean's just in case some garbage developed in > my build tree. I've tried to do all those things I would suggest to > others if they have some odd thing going on that other people don't > seem to be seeing. > > My laptop is a bit older dell latitude with 32Mb Nvidia card. I am > running Linux (Fedora Core 6) with the proprietary nvidia drivers. > Nvidia driver version is 1.0.9631 ... this is the most current version > that supports my graphics hardware. The OSG version ran great until a > few weeks ago. The plib version continues to run just fine on my > laptop as it always has. > > FlightGear starts up, shows a splash screen gets as far as showing > "initializing subsystems". When I run with --log-level-debug, I see > that it finishes loading the keyboard bindings. Then on the console > it prints "Splash screen progress setting up time & renderer" although > this is never drawn. Immediately after that it crashes trying to call > sceneView->draw(); > > Here is the back trace: > > Program received signal SIGSEGV, Segmentation fault. > [Switching to Thread -1208727824 (LWP 17599)] > 0x0075cc4a in osg::GraphicsContext::releaseContext () > from /usr/local/lib/libosg.so.12 > (gdb) where > #0 0x0075cc4a in osg::GraphicsContext::releaseContext () > from /usr/local/lib/libosg.so.12 > #1 0x001e1dcf in osgUtil::RenderStage::draw () > from /usr/local/lib/libosgUtil.so.12 > #2 0x001dd5ae in osgUtil::RenderStage::drawPreRenderStages () > from /usr/local/lib/libosgUtil.so.12 > #3 0x001e95a4 in osgUtil::SceneView::draw () > from /usr/local/lib/libosgUtil.so.12 > #4 0x08063c8c in FGRenderer::update (refresh_camera_settings=true) > at renderer.cxx :577 > #5 0x08061c6c in FGRenderer::update () at renderer.hxx:41 > #6 0x080a6c41 in fgOSMainLoop () at fg_os_sdl.cxx:249 > #7 0x0805d027 in fgMainInit (argc=2, argv=0xbfdb2294) at > main.cxx:1071 > #8 0x0805c1aa in main (argc=2, argv=0xbfdb2294) at bootstrap.cxx:220 > > This is gdb, so I'm not confident that it has the osg function calls > correctly identified. > > Does any one have any suggestions or ideas? It is a problem for me if > I cannot run FlightGear on my laptop here. :-(
I have very little knowledge about this, but for more than a month ago did I have a problem, which looks like this one. It turned out that RoyVegard also had it. It had something to do with a null pointer in src/osgUtil/RenderStage.cpp around line 854 in the OpenSceneGraph source code. I got FlightGear working again by using osgViewer instead of SDL. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
