VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri Jun 25 2010 - 12:56:34 CDT

Osmany,
  The partial ghosting you describe still sounds like an
emitter synchronization problem to me. When the emitter is in sync with
the GPU, then you should only see either working stereo, or non-stereo
displays. If you see part of the screen in stereo and part is "ghosting",
that indicates that the emitter may be lagging the stereo buffer swaps,
or that the LCD panel isn't running in the correct 120Hz stereo mode.
Can you paste the complete VMD OpenGL startup messages into an email
for me? I'm curious whether you've got the X11 composite extension enabled,
or any other potential problem-causing features that may interfere with
stereo display.

Cheers,
  John Stone
  vmd_at_ks.uiuc.edu

On Fri, Jun 25, 2010 at 01:51:26PM -0400, Osmany Guirola Cruz wrote:
> Hi
> Yes is a linux system(ubuntu 10.04 x86_64) and all is OK with the xorg
> here is the output of /var/log/Xorg.0.log
>
> (**) Jun 25 07:39:25 NVIDIA(0): Onboard stereo requested (DIN connector)
> NVIDIA(GPU-0): Display (ViewSonic VX2265wm (DFP-0)) supports NVIDIA 3D
> Vision
> (II) Jun 25 07:39:26 NVIDIA(GPU-0): stereo.
>
> I use option 3 for stereo. I don't use option 10 because i don't have
> the NVIDIA 3D Vision kit.
>
> For example now with driver 256.35 when i set the stereo mode in vmd it
> is visible only on the 1/3 bottom of the screen (its perfect) but the
> other, 2/3 top of the screen the image is ghosthing..
>
> Greetings
>
> Osmany
>
>
>
> On Fri, 2010-06-25 at 10:14 -0500, John Stone wrote:
> > Hi,
> > I assume from the driver version numbers that you're using Linux?
> > Have you checked the contents of the file /var/log/Xorg.0.log to see
> > if there are any errors or warnings about your stereo configuration
> > when you're using 195.36.15? I don't know anything about the 60GX NUVISION
> > glasses emitter you mention, do you know if they are guaranteed to work
> > correctly with the NVIDIA drivers? The /var/log/Xorg.0.log file should
> > indicate whether the driver thinks it is talking to the emitter through
> > the DIN connector or via USB. There have been driver versions that
> > broke the behavior of DIN emitters before, which I was able to track down
> > by reading the X server output in the log files. I would start with the
> > Xorg.0.log file and see what you find and whether the stereo related
> > messages agree with your expectations or not.
> >
> > Cheers,
> > John Stone
> > vmd_at_ks.uiuc.edu
> >
> > On Fri, Jun 25, 2010 at 07:58:06AM -0400, Osmany Guirola Cruz wrote:
> > > Hi,
> > >
> > > I am having problems with the stereo view using vmd.
> > > This is my hardware
> > > QUADRO FX-3700 with DIN connector
> > > Viewsonic VX2265wm 120Hz
> > > 60GX NUVISION
> > >
> > > Whit driver 195.36.15 its impossible to see in stereo(ghosting image).
> > > When i use the 195.36.24 driver i can see in stereo with a "little ghost
> > > image" but acceptable and with a new problem, the top right corner of my
> > > display is interlaced, all the time, using or not using the stereo.
> > > then i switch to 195.36.31 and the problems remains
> > > and my last choice was change to driver 256.35 and now the problem of
> > > interlaced corner disappear but its impossible to see an stero image too
> > > much ghosting
> > > in all cases i checked the frequencies of the monitor and are OK..
> > >
> > > Greetings
> > >
> > > Osmany
> > >
> >
> 

-- 
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