VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Wed May 28 2003 - 12:29:25 CDT

Dear Oscar,
  I have a few suggestions for you regarding your use of stereo on Linux:
1) In order to setup stereo with the NVidia drivers, you'll need to follow
   the config options they list in their Linux README file:
   ftp://download.nvidia.com/XFree86/Linux-x86/1.0-4363/README.txt

2) Even if you have the NVidia Linux driver configured correctly, there's
   a special step you have to follow in order to use VMD with their drivers.
   You'll need one of the new VMD 1.8.1 beta versions, or the final version of
   VMD 1.8.1 which will be released in a week or so. You can get a test
   version here: ftp://ftp.ks.uiuc.edu/pub/mdscope/vmd/alpha/
   Once you get one of these newer versions of VMD installed, you'll need
   to set the environment variable "VMDPREFERSTEREO" to 1. This will
   trigger special code in VMD that makes it work better with the NVidia
   Quadro drivers.

Let us know if you need more help with this.

Thanks,
  John Stone
  vmd_at_ks.uiuc.edu

On Wed, May 28, 2003 at 07:21:03PM +0200, Oscar Moran wrote:
> Dear sirs,
> I have recently acquired a set of stereoscopic glasses 60GX. I intend to
> use them with a Pentium-class based hardware running under Linux RedHat 7.2
> (and probably I will update it to 9.0, if convenient). The system has a
> Nvidia Quadro4 550XGL graphic board. I have already configurated the driver
> for the graphic board -just a basic configuration, without any option. The
> system uses a monitor Hitachi CM751. I intend to use these hardware to
> visualise molecules in 3-D with VMD. I have several problems, and I shall
> be very pleased to receive some assistance for the following issues:
>
> 1- I must confess that I have very reduced experience on configuring
> graphic boards. I presume the I have to include several options to the
> /etc/X11/XF64Config-4 file, to have the appropriate syncronisation signal -
> if I understood the principle of functioning of the glasses. Unfortunately,
> Nvidia does not give any support, at least as it is indicated in their web
> site. I have just sent a message for help to Nuvision people also. Have you
> any experience to such configuration, and/or do you know where can I get
> the information? Any suggestion will be appreciated.
>
> 2- When I put the VMD (1.7 or 1.8) in the crystal glasses or anaglyph
> modes, I see two images distorted, one on the top and the second in the
> bottom. In the interleaved mode, I can see (correctly?) two images
> superposed, but as soon I change window, the image become only one. I guess
> that it happens because the program does not realy detect the stereographic
> harware, because is nor correctly configures. Any suggestion.
>
>
>
> Thank you in advance,
> Oscar
>
>
>
>
>
> Oscar Moran Via DeMarini, 6
> Istituto di Biofisica I-16149 Genova,
> Italy
> Consiglio Nazionale delle Ricerche Tel. +39-0106475558 

-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
Email: johns_at_ks.uiuc.edu                 Phone: 217-244-3349              
  WWW: http://www.ks.uiuc.edu/~johns/      Fax: 217-244-6078