[GRASS5] Re: NVIZ crashes

Helena hmitaso at unity.ncsu.edu
Tue Aug 14 21:03:48 EDT 2001

Markus Neteler wrote:

> On Tue, Aug 14, 2001 at 08:50:49AM -0300, Bob Covill wrote:
> > Markus Neteler wrote:
> > > >
> > > > [snip]
> > > >
> > > > To both Markus and Helena:
> > > >
> > > > What happens if you just disable loading "dri", but still load "glx"?

that is how I am running it here

> >
> > I finally got RedHat Linux 7.1 re-installed. To date I have had no
> > problems with NVIZ. I have tried repeatedly opening and closing it with
> > no problems.
> >
> > The motherboard is an older single processor (300 MHz Pentium II). The
> > video card is a Matrox Milleneum G200.
> >
> > Helena -- do you know the make and model of the video card in your
> > system?

NVIDIA Quadro 2 Pro - except for the crashes, it is really great, the graphics
a "look and feel" of SGI, but everything is faster.
the other crashing machine has NVIDIA GeForce

> we have tested today for a while. The problem is DRI (direct rendering,
> needed for openGL hardware acceleration). If DRI is disabled, NVIZ
> works on Xfree4.0.3 (redhat 7.1) even when glx is active.

I have had dri disabled all the time, so that is not a problem for me.
We have also tried to run it on a single processor - it crashes too but at
it gives an error message.
Bob, I put my Xconfig and log file from the crash at

maybe you will see something obvious there that we are missing.
I don't have any problems with rendering or any other NVIZ functionality.
the crashes happen when the interface window is being opened or when I
am closing it.

thanks for looking at it,


> If DRI is enabled, the mesa-glxdemo programs run, but nviz crashes.
> It is talking about a bad integer initialization (integer out of range).
> No idea, how to debug this.
> On thursday I'll switch to Xfree4.1.0, which provides an improved DRI.
> Eventually the problems will be solved then... if not, it is a NVIZ
> problem (probably the TOGL).
> Bob, if you are willing to upgrade the TOGL1.0 to TOGL1.5, eventually
> this will help as well? Of course I would test it here! Do you expect
> side effects from such upgrade?
> Markus
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