> It takes a bit of understanding. Am I correct that if the monitor does
> not have a built in emitter, the glasses need to be triggered from
> either a remote transmitter plugged into the 3 pin mini din port of a
> suitable quadro card for quad buffered, or to a USB port in the case of
> consumer GTX (not quad buffered and not supported by molecular modeling
> software, for software enabled games etc.).

In Windows I don't know if the GTX cards allow qbs in a window. I
haven't tested such a configuration at all. But with a quadro and
external emitter in Windows you only need the USB connection to the
emitter. In linux you need both the 3 pin and usb connections for
external emitters.

> If the monitor does have a built in emitter, the glasses are triggered
> from the monitor directly with no link to the video board except the
> video signal, so any quad-buffered board will work. Are the glasses
> triggered effectively directly by the sync-signals within the monitor?
> If so why won't Linux work?

Let's be specific. The glasses are triggered from a sync signal that
comes out of the emitter housed at the top of the monitor. The signal
is sent over the dual link DVI-D cable from the quadro, there's no usb
or 3 pin mini din cable involved anywhere. The catch is the linux &
windows nvidia drivers have built in code specifically to detect
monitors that have the built-in 3d vision v2 emitters such as the Asus
VG278H. Again, this works fine in Linux and Windows with recent
quadro's, but I don't know if GTX cards can do the qbs in a window in
Windows (definitely not in Linux).

> Asus VG236HE, Acer GD235Hzbid, or BenQ XL2420T are difficult to find
> here and very expensive compared to normal list price.

I don't know what price range you're looking for but the ones with the
built-in emitters like the VG278H are more expensive. It's currently
~$500 USD, so your total with a quadro 600 would be ~$650, or you
could get a refurbished quadro 3700 or quadro 370 for much less than
the $130 I'm seeing for the 600. There's a list of 3d vision capable
monitors below.

> I assume the Acer GR235HAbmii won't work with PyMol, Chimera, VMD etc as
> it is a passive system. Am I correct?

I don't think that's passive since it says it supports one of the 3d
methods that bluray devices use (HDMI 1.4) use, but it's not 3d vision
or qbs, see Q12 here :

http://www.mitsubishi-tv.com/feature/3DTV/3D_FAQ

i.e. frame packing != frame sequential != qbs

> Can you advise whether the smaller 23" S23A750D might work with a
> suitable Quadro e.g. 300, 410, 600. This model includes 3D glasses but I
> can't work out whether it has a compatible 3d vision v2 built-in emitter
> or not.

Looking more at these samsung monitors, I don't think any of these are
3d vision, incl the one I posted on the chimera mailing list. I found
this list here of the 3d vision v2 compatible monitors with the
lightboost tech :

http://hardforum.com/showthread.php?t=1680564

and this is a list from nvidia which includes monitors with built-in
emitters and without :

http://www.nvidia.com/object/3d-vision-system-requirements.html

I also think I found the code that your previous stackoverflow link
was referencing :

http://stackoverflow.com/questions/6827737/how-do-i-output-3d-images-to-my-3d-tv/6828590#6828590

..and they're basically saying the same thing regarding quadro's and
quad buffers, except this bit is interesting :

"With any luck, Direct3D 12 will require QBS, and thus NVIDIA (and
AMD) will expose it in OpenGL" (for consumer cards).

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