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Old 06-03-10, 06:35 AM   #1
gary_s
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Default 3D Vision on Dell Alienware 1920x1080_120 (Linux)

I cannot get this monitor to give me stereo ('3D') vision.

I successfully managed to get 3D working on a Samsung 1680x1050_120 using "Stereo" "option" "10". However, using this option simply fuzzes the screen on this monitor.

The stereo option '3' seems to get closest to the mark. In this mode, nvidia-settings gives several suitable stereo GLX visuals. However, when it goes into stereo mode, it seems to be displaying left and right images on non-synchronised scans, such that the image jitters side-to-side. It certainly doesn't give a stereo view.

In a desperate attempt to win, I've noe tried all stereo integer options up to 11. The Nvidia documentation only describes options up to 6, so it is obviously guesswork here. I also tried the Option "AllowDFPStereo" "on" with stereo option 3 - no improvement though.

Anyone have any clues?

We are using SLES10.2 and NVidia driver 195.36.15 and Geforce 3DVision kit with DIN cable direct off the board.
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Old 06-03-10, 09:24 AM   #2
Licaon
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

Quote:
Originally Posted by gary_s View Post
I cannot get this monitor to give me stereo ('3D') vision.
you will never do on Linux unless you have a Quadro-type card
for Geforce ones stick with Windows 7 or Vista

basically Geforce cards can do 3D with the nVidia driver only on DirectX applications on Windows, nVidia restricts it like this so that they can sell the Quadro cards for workstations with Windows/Linux OpenGL 3D rendering apps and such

in Windows one could bypass this with the new TriDef DDD driver (well until nVidia blocks it anyway)
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Old 06-03-10, 11:16 AM   #3
gary_s
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

We do have quadro type cards - FX3700. Forgot to mention that.
Anyway, I'm pleased to say that this is working now. I switched back to using the stereo option 10 and fiddled elsewhere in the xorg.conf (has to be said - I'm not entirely sure where?) - and hey presto, it works.

Thanks for replying though.
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Old 06-03-10, 02:26 PM   #4
danix
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

Stereo Mode 10 should work with the Alienware AW2310, a supported card, and the GeForce 3DVision kit + DIN cable.

However, there's currently a bug that prevents the display from actually getting 120 Hz. If you set 120 Hz with this configuration you'll actually get 100 Hz. This will be fixed in the next released 256.xx driver. (The 256.29 beta driver does not have this fix.)
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Old 06-14-10, 01:55 PM   #5
visionscientist
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

Hi Danix,

do you know whether this bug might also affect the Acer GD235HZ (which is the other currently available 120 Hz-FullHD display)? We see terrible and regular tearing on that display at 120 Hz, which indicates something is wrong with the synchronization - under Windows, we don't have that problem, and 120 Hz displays with lower resolution are working fine under Linux as well.

Thanks!
Michael
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Old 06-21-10, 06:08 PM   #6
benrico
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

I'm also curious if the new driver will fix the sync problem with the 12hz Acer??

OP can you post your xorg.conf?
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Old 06-23-10, 10:44 AM   #7
michael.nischt
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

Quote:
Originally Posted by danix View Post
Stereo Mode 10 should work with the Alienware AW2310, a supported card, and the GeForce 3DVision kit + DIN cable.

However, there's currently a bug that prevents the display from actually getting 120 Hz. If you set 120 Hz with this configuration you'll actually get 100 Hz. This will be fixed in the next released 256.xx driver. (The 256.29 beta driver does not have this fix.)
I have the 256.35 driver installed but Option 10 doesn't seem to work with my GeForce Quadro FX 4800 and Alienware AW2310 120Hz display (+ din cable and 3D Vision kit). Actually, OpenGL says there is no quad-buffer support. With Option "Stereo" "3" there is but in neither mode the emitter is shows the nvidia logo in green and the glasses are not active. :-(

Btw. In both modes the logo is white/red for a short time while booting.

Any help to make this work would be awesome!

Thanks and best,
Michael

OS: Ubuntu 10.04 "Lucid Lynx" 2.6.32-22-generic #36-Ubuntu SMP Thu Jun 3 19:31:57 UTC 2010 x86_64 GNU/Linux
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Old 07-08-10, 01:31 PM   #8
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

Quote:
Originally Posted by danix View Post
Stereo Mode 10 should work with the Alienware AW2310, a supported card, and the GeForce 3DVision kit + DIN cable.

However, there's currently a bug that prevents the display from actually getting 120 Hz. If you set 120 Hz with this configuration you'll actually get 100 Hz. This will be fixed in the next released 256.xx driver. (The 256.29 beta driver does not have this fix.)
I'm using the 256.35 driver with the Alienware monitor and can still only get 100Hz. I used nvidia-settings to write out the xorg.conf file after choosing 1920x1080@120Hz so I imagine the xorg.conf file is all in order. Danix, do you know if this fix got pushed back to a later driver update?

Stereo works for me but it's a bit flickery at 100Hz.
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Old 07-09-10, 03:17 PM   #9
michael.nischt
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

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Originally Posted by dwtd View Post
I'm using the 256.35 driver with the Alienware monitor and can still only get 100Hz. I used nvidia-settings to write out the xorg.conf file after choosing 1920x1080@120Hz so I imagine the xorg.conf file is all in order. Danix, do you know if this fix got pushed back to a later driver update?

Stereo works for me but it's a bit flickery at 100Hz.
You have to "disable force GPU scaling" to get 120Hz instead of 100Hz. I believe it's not an xorg.conf setting but saved on the graphics board instead..
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Old 07-12-10, 01:10 PM   #10
danix
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

Quote:
Originally Posted by michael.nischt View Post
I have the 256.35 driver installed but Option 10 doesn't seem to work with my GeForce Quadro FX 4800 and Alienware AW2310 120Hz display (+ din cable and 3D Vision kit). Actually, OpenGL says there is no quad-buffer support. With Option "Stereo" "3" there is but in neither mode the emitter is shows the nvidia logo in green and the glasses are not active. :-(

Btw. In both modes the logo is white/red for a short time while booting.

Any help to make this work would be awesome!

Thanks and best,
Michael

OS: Ubuntu 10.04 "Lucid Lynx" 2.6.32-22-generic #36-Ubuntu SMP Thu Jun 3 19:31:57 UTC 2010 x86_64 GNU/Linux
Michael, can you post an nvidia-bug-report.log?

I think the USB emitter can't currently be detected correctly on certain distros; I'm not sure if Ubuntu Lucid is one of those.
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Old 07-12-10, 01:50 PM   #11
michael.nischt
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Default Re: 3D Vision on Dell Alienware 1920x1080_120 (Linux)

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Originally Posted by danix View Post
Michael, can you post an nvidia-bug-report.log?

I think the USB emitter can't currently be detected correctly on certain distros; I'm not sure if Ubuntu Lucid is one of those.
Thanks for answering. Luckily everything is working properly now :-)

I don't really know what I changed but now the emitter light turns from red/white to green during the boot process every time. One thing changed is that I have decreased the plugged in usb devices from 6 to 3 (emitter, keyboard, mouse) during start-up.
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