[lug] nVidia drivers

[Davide Del Vento]

Hi,
I've found this Jan 2011 thread from
http://www.nvnews.net/vbulletin/showthread.php?t=155834 which solves the
issue, at least for this hw. Cut-n-pasting in case the site disappear.
Thanks,
Davide


--------------------------------------------------------------
I am running 64-bit RHEL 5.5 on an HP Z600 workstation and purchased a 3D
Vision Kit, but also am unable to get the stereo graphics to work.
I successfully installed the latest nVIDIA driver (260.19.29) for the Quadro
FX 4800 graphics card from the "telinit 3" non-X-windows mode.
I have connected the 3D emitter to both the USB port and the 3-pin DIN
connector of the Quadro FX 4800.
I also am using the HDMI/DVI cable that came with the kit to connect the
computer to the 3D Vision compliant Acer GD235HZ 120 Hz LCD display.
In the xorg.conf file, I set the Stero option to "10", as directed in the
README for xconfig options with that 260.19.29 driver:
http://us.download.nvidia.com/XFree86/Linux-x86/260.19.29/README/xconfigoptions.html

I have tried rebooting the computer after doing all this.
The emitter keeps flashing red and I can not get stereo to work.
For example,
glxgears -stereo
Error: coudn't get an RGB, Double-buffered, Stereo visual

After hours of searching on the forums, I have been unable to find a
solution.

The documentation on the Quadro FX 4800 even claims Full OpenGL
Implementation on Linux.
And according to the URL for the Quadro cards, I should be able to get 3D
Vision to work.
http://www.nvidia.com/object/quadro_pro_graphics_boards_linux.html
On that URL, there's a link for supported drivers and displays, which
indicates my system is a go.

It would be great if someone could help me figure out what I am doing
incorrectly!

--------------------------------------------------------------

I looked at the /var/log/Xorg.0.log and found a hint of the problem:

(**) NVIDIA(0): Option "Stereo" "10"
(**) Jan 14 14:19:21 NVIDIA(0): USB IR emitter stereo requested
(**) Jan 14 14:19:21 NVIDIA(0): Enabling RENDER acceleration
(II) Jan 14 14:19:21 NVIDIA(0): Support for GLX with the Damage and
Composite X extensions is
(II) Jan 14 14:19:21 NVIDIA(0): enabled.


(WW) Jan 14 14:19:23 NVIDIA(0): UBB is incompatible with the Composite
extension. Disabling
(WW) Jan 14 14:19:23 NVIDIA(0): UBB.
(WW) Jan 14 14:19:23 NVIDIA(0): Stereo is incompatible with the Composite
extension.
(II) Jan 14 14:19:23 NVIDIA(0): Disabling stereo.

Any ideas on how to fix this?

--------------------------------------------------------------

man nvidia-xconfig gave me the clue to run this:

nvidia-xconfig --no-composite

Which added a section to the xorg.conf file:

Section "Extensions"
Option "Composite" "Disable"
EndSection


Once I did that, logged out of gnome, then logged back in, the green light
on the emitter went on!

But it turns out, I still had one more problem to fix.
I had to use the DVI to DVI cable that came with the Acer Display, not the
HDMI to DVI cable that came with the 3D Vision Kit. Then, I had to log out
and back in again and voila...I finally have 3D stereo working now on an LCD
display with nVIDIA's 3D Vision on RHEL 5.

--------------------------------------------------------------

On Mon, Jul 18, 2011 at 10:58, Davide Del Vento <davide.del.vento at gmail.com>
wrote:
> Hi,
> time is coming to update some computers, and being a stereoscopic
> person (the real, photographic kind, not the current movie fad, see
> here for a group where I belong: http://www.rockymtnstereophoto.org/ -
> sorry javascript is needed but it shouldn't)....
> ... I'm wondering about stereoscopic support from nVidia cards on
> linux (actually I'd be open to other vendors, but it looks like nVidia
> is the best choice). Now:
>
> I care about pictures only, (very) marginally my own videos, don't
> care about movies, blu-ray, games and that stuff - for which there is
> a lot of "noise" online, preventing me to find the "right"
> information.
>
> From nVidia website it looks like that the video card drivers works
> fine with linux.
> They also do have shutterglasses (either IR or USB) and they don't
> have drivers for linux. In fact, in the requirements, they say
> windows-something:
> http://www.nvidia.com/object/3d-vision-requirements.html
> However, those glasses are really "dumb", the only thing that they
> need is to synch with the screen to "flip" on-off to the right eye at
> the right time. No software is required at all! In fact, in the past,
> they used to have a (wireless or wired) dongle which would intercept
> the synch signal from VGA cable (or even from a TV cable!) and it just
> worked regardless of the operating system, monitor, computer, TV, etc
> (the problem was that with CRTs, you either had a very expensive
> monitor/TV, or very low resolution, or a lot of flickering). I had one
> of those back in Italy... But I didn't have a digital stereoscopic
> camera at that time (now I have the fuji W3), so I didn't care much
> about them... I'll bet this technology still works, if you  can:
> - use VGA cables (is there a resolution or refresh limit for which
> they switched to DVI cables? Or is it just for "digitalizing"?)
> - force the video card driver to go into "stereoscopic mode" even if
> they don't see any shutterglass hooked into the USB
>
> So the question is: has any of you played with stereoscopy on linux
> with nVidia (or any other FWIW) cards? With what success? I checked on
> the internet, but I didn't find much, probably because of the clutter
> caused by the fad mentioned above...
>
> Another option (not sure if easier or harder): anybody tried to use a
> 3DTV instead of a monitor (I think in that case you have to use a HDMI
> cable these days, right)?
>
> Thanks,
> Davide
>
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