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Old 07-06-11, 09:45 AM   #1
sludtke42
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Join Date: May 2008
Posts: 2
Unhappy 3D Vision & Dual displays (only 1 3-D)

I have a high-end setup for scientific visualization and computation:
Quadro 4000
Tesla C2070
30" Dell monitor (2560x1600)
27" 3D Vision ready Acer (1080p)

Just got the 27" monitor yesterday, and I've been desperately trying to get it to work in stereo mode ever since. There are a couple of issues, though. First, both monitors require dual-link DVI. The 30" because it is such a high resolution, and the 27" so it can do 120hz 1080p. Of course, as far as I can find, there aren't any Nvidia products that can do multiple dual-link outputs. However, since I have the new Tesla, and it has D-DVI out as well, I decided to give that a try. So, I have the Acer monitor plugged into the Quadro, which supports windowed stereo, and the Dell plugged into the Tesla.

I went ahead and reconfigured X for this setup. Since the monitors were running on 2 cards, I had to use Xinerama rather than twinview, but I set it all up, and to my joy, both displays seemed to work fine, and I could run the Acer at 120 hz with no problems. Everything good, right ? Not so much. None of the programs I have would startup in stereo mode. The 3D Vision emitter is working fine (green light, not red), and the X logfile shows that it recognises the Acer as stereo capable, but glxinfo shows no stereo-capable visuals. In desperation, I finally tried disabling the 30" monitor and just running the stereo display, and bingo, stereo is working perfectly. Unfortunately, for my application, I need both monitors active (only 1 doing stereo, of course). I've tried every possible combination of device initialisation ordering, screen layouts, X config options, etc. that I can think of, and still no-go.

Anyone have any ideas ?

My machine is running 64-bit Ubuntu 11.04 with the 270.41.06 driver. I'm attaching my current X config and logfile in case anyone has an idea. Thx
Attached Files
File Type: log Xorg.0.log (48.6 KB, 75 views)
File Type: txt xorg.conf.txt (3.1 KB, 159 views)
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