two-seat configuration with nvidia 3D-Vision does not work in stereo

[Greipel.Joachim at mh-hannover.de]

Hi all,
 
We have a number of workstations equipped w. Quadro FX 3800, 3D-Vision
Stereo 
Glasses and Samsung 2233RZ 120 Hz Monitors. We are using OpenGL quad
buffered 
Stereo under openSuSE LINUX 11.2 using the proprietary NVIDIA driver 
 
An attempt to equip the workstations with an additional set of the same 
Graphics Card, Monitors, Stereo Emitter, Keyboard and Mouse to realize a

multiseat configuration however was not successful in respect to stereo
display: 
 
We configured the computers essentially as shown in 
http://wpkg.org/Configuring_multiseat_X_workstation
and this at a first glance seemed to work. 
 
Unfortunately the second seat configuration did not recognize the second
USB 
Stereo Emitter and subsequently on this seat stereo was disabled. 
The error message in the Xorg.1.log was
"Failed to claim USB interface for stereo emitter device. Disabling
stereo"
On the second stereo emitter the led was slowly blinking in red.
 
On the other hand both Stereo-Emitters were listed in
/proc/bus/usb/devices. 
 
Does anyone have a hint how to set the second stereo emitter into
function?

Regards,
 
Joachim
 
--
Dr. rer. nat. Joachim Greipel
Med. Hochschule Hannover
Biophys. Chem. OE 4350
Carl-Neuberg-Str. 1
30625 Hannover
Germany
 
Fon: +49-511-532-3718
Fax: +49-511-532-8924
 
 
 
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