Hi Murray,

The is known bug in NVidia drivers related to glXWaitVideoSync and
8800GTS.  You could try commenting the associate lines out of
Producer.

The other alternative would be to do update to the CVS version of the
OSG.  The new osgViewer that functionality replaces osgProdcer doesn't
use glXWaitVideoSync (although I may add it as an option later, but it
won't be on by default).

Robert.


On 2/13/07, Murray Curtis <[EMAIL PROTECTED]> wrote:

I'm getting a blank window when running osgviewer on a new hardware
installation. The installation process was first tested on my existing
hardware and works just fine.  Both systems are running Ubuntu 6.06 and are
installed from the same CD/respositories. OSG is version 1.2. The driver is
Nvidia 9746.

Old (working hardware) Intel P4 on 925 chipset with Nvidia 6800GT
New (not working) Intel Core 2 E6600 on 975X chipset with Nvidia 8800GTS

If I set OSG_NOTIFY_LEVEL to DEBUG_INFO the last message is:

  OsgCameraGroup::realize()
_threadModel==Producer::CameraGroup::SingleThreaded
(that's all in one line)

On the working hardware the next lines are:

entering 0x8084640 init.
   running 0x8084640 init.
OpenGL extensions supported ....
 (long list of GL extensions)

So it seems to fail when someone (OSG?) starts probing the OpenGL driver for
its capabilities.  OSG linked OK when I compiled it, ldd reports the same
links on both systems.  Other GL programs seem to run OK; Celestia, glxgears,
the GL screen savers.  I get the Nvidia logo on starting X and glxinfo
reports "direct rendering: yes" and references to Nvidia as the vendor the
the GLX client.

I've tried installing the Nvidia drivers via apt (the Debian package manager),
"envy" - a script for installing nvidia and ATI drivers on Ubuntu and by
Nvidia's own script, recompiling and linking Producer/OSG each time, all with
the same result.

I've tried running with the dual core technology turned off (BIOS) and with a
non SMP kernel.

And now I've run out of ideas...   any suggestions please?

Thanks
Murray Curtis
Technical Director
Drag Tag P/L


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