3D from Linux to Samsung 2233RZ LCD ?
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At the company where I work, we have several 3D-capable PCs using Quadro FX cards under Linux, displaying to CRTs. The 3D applications use quad-buffering, and we use CrystalEyes or NuVision shutter glasses to view 3D.

The CRTs are getting old, and I want to replace them with LCD monitors.

We purchased a Samsung 2233RZ monitor, but I cannot get 3D to display correctly. Both the left and the right images are visible, though one side is slightly darker (rather like extreme ghosting).

Has anyone had any success displaying 3D with quad-buffering using Quadro an FX card to a Samsung 2233RZ monitor? Preferably under Linux, though I am interested in Windows XP successes, as well.
At the company where I work, we have several 3D-capable PCs using Quadro FX cards under Linux, displaying to CRTs. The 3D applications use quad-buffering, and we use CrystalEyes or NuVision shutter glasses to view 3D.



The CRTs are getting old, and I want to replace them with LCD monitors.



We purchased a Samsung 2233RZ monitor, but I cannot get 3D to display correctly. Both the left and the right images are visible, though one side is slightly darker (rather like extreme ghosting).



Has anyone had any success displaying 3D with quad-buffering using Quadro an FX card to a Samsung 2233RZ monitor? Preferably under Linux, though I am interested in Windows XP successes, as well.

#1
Posted 03/03/2009 10:39 PM   
[quote name='Keitht' post='513293' date='Mar 3 2009, 11:39 PM']At the company where I work, we have several 3D-capable PCs using Quadro FX cards under Linux, displaying to CRTs. The 3D applications use quad-buffering, and we use CrystalEyes or NuVision shutter glasses to view 3D.

The CRTs are getting old, and I want to replace them with LCD monitors.

We purchased a Samsung 2233RZ monitor, but I cannot get 3D to display correctly. Both the left and the right images are visible, though one side is slightly darker (rather like extreme ghosting).

Has anyone had any success displaying 3D with quad-buffering using Quadro an FX card to a Samsung 2233RZ monitor? Preferably under Linux, though I am interested in Windows XP successes, as well.[/quote]

We're using windows XP with OpenGl based stereo, tried the monitor with the same glasses as you with the same result (like triple image... ;-)). Maybe we need to wait for the OpenGL drivers from Nvidia... but honeslty shouldnt this work... in theory?? ;-)
[quote name='Keitht' post='513293' date='Mar 3 2009, 11:39 PM']At the company where I work, we have several 3D-capable PCs using Quadro FX cards under Linux, displaying to CRTs. The 3D applications use quad-buffering, and we use CrystalEyes or NuVision shutter glasses to view 3D.



The CRTs are getting old, and I want to replace them with LCD monitors.



We purchased a Samsung 2233RZ monitor, but I cannot get 3D to display correctly. Both the left and the right images are visible, though one side is slightly darker (rather like extreme ghosting).



Has anyone had any success displaying 3D with quad-buffering using Quadro an FX card to a Samsung 2233RZ monitor? Preferably under Linux, though I am interested in Windows XP successes, as well.



We're using windows XP with OpenGl based stereo, tried the monitor with the same glasses as you with the same result (like triple image... ;-)). Maybe we need to wait for the OpenGL drivers from Nvidia... but honeslty shouldnt this work... in theory?? ;-)

#2
Posted 03/05/2009 08:53 AM   
[quote name='Keitht' post='513293' date='Mar 4 2009, 12:39 AM']At the company where I work, we have several 3D-capable PCs using Quadro FX cards under Linux, displaying to CRTs. The 3D applications use quad-buffering, and we use CrystalEyes or NuVision shutter glasses to view 3D.
We purchased a Samsung 2233RZ monitor, but I cannot get 3D to display correctly. Both the left and the right images are visible, though one side is slightly darker (rather like extreme ghosting).
Has anyone had any success displaying 3D with quad-buffering using Quadro an FX card to a Samsung 2233RZ monitor? Preferably under Linux, though I am interested in Windows XP successes, as well.[/quote]

Hey, we are using the same setup as you :) also want Samsung 2233 to play in linux. Got so far i could run "glxgears -stereo" but currently stuck on 60 hz.
Have you managed to get higher refresh rate?
[quote name='Keitht' post='513293' date='Mar 4 2009, 12:39 AM']At the company where I work, we have several 3D-capable PCs using Quadro FX cards under Linux, displaying to CRTs. The 3D applications use quad-buffering, and we use CrystalEyes or NuVision shutter glasses to view 3D.

We purchased a Samsung 2233RZ monitor, but I cannot get 3D to display correctly. Both the left and the right images are visible, though one side is slightly darker (rather like extreme ghosting).

Has anyone had any success displaying 3D with quad-buffering using Quadro an FX card to a Samsung 2233RZ monitor? Preferably under Linux, though I am interested in Windows XP successes, as well.



Hey, we are using the same setup as you :) also want Samsung 2233 to play in linux. Got so far i could run "glxgears -stereo" but currently stuck on 60 hz.

Have you managed to get higher refresh rate?

#3
Posted 04/14/2009 08:01 PM   
This is how far I have got with this topic.

What I know from the monitor information panel
Horizontal (scan rate) Vert (refresh rate) sync polarity (+/-) resolution (ignore as auto-stretch)
Linux (120 Hz) 129.5 KHz 120 Hz PP 1680x1050
Vista (login screen) 129.5 KHz 120 Hz PP 1680x1050
Vista (stereo) 185.2 KHz 120 Hz PP 1680x1050

Linux settings in xorg.conf to give "Linux (120 Hz)" in above table

Modeline "1680x1050_120" 238.46 1680 1728 1760 1840 1050 1053 1059 1080 +hsync +vsync

Section "Extensions"
Option "Composite" "disable"
EndSection

Section "Screen"

# two options are a minimum for stereo on a DFP
Option "Stereo" "3"
Option "AllowDFPStereo" "yes"

# to force monitor to ModeLine settings for testing purposes
Option "UseEDID" "false"
Option "NoBandWidthTest" "true"
Option "ExactModeTimingsDVI" "true"
Option "ModeValidation" "DFP-0: NoEdidModes, AllowNon60HzDFPModes, NoMaxSizeCheck, NoMaxPClkCheck, NoMaxSizeCheck, NoXServerModes, NoPredefinedModes"


The Linux settings above replicate the Vista Login screen settings, and do not provide stereo display (in quad buffer mode).
Video settings may be reported from PowerStrip from [url="http://entechtaiwan.com/util/ps.shtm"]http://entechtaiwan.com/util/ps.shtm[/url] which runs under Vista. When running PowerStrip and displaying stereo (again, in Vista, not Linux) PowerStrip cannot be seen. Swapping back to PowerStrip (Alt-Tab) results in the loss of stereo display. There is a logging feature of PowerStrip, but I could not get it to work (no need to swap back to PowerStrip). I reported the problem to the makers of PowerStrip but did not get a reply. However, using two screens (both Samsung 2233RZ) PowerStrip can run in the second monitor, and report on the first monitor, when the first is in stereo mode. However, the numbers reported are not self-consistent:
(table formatting got lost pasting from Word)

pixel clock [MHz], 329.786
sync, + / +
Horizontal scan rate (HScanRate) [KHz], 185.273
active (x-res), 1024, 3.105 us
front porch (HFrontPorch), 20, 0.061 us
sync width (HSync), 20, 0.061 us
back porch (HBackPorch), 716, 2.171 us
total (HTotal), 1780, 5.397 us
Vertical refresh rate (VScanRate) [Hz], 239.991
active (y-res), 768, 4.145 ms
front porch (VFrontPorch), 3, 0.016 ms
sync width (VSync), 6, 0.032 ms
back porch (VBackPorch), 1, 0.005 ms
total (VTotal), 772, 4.167 ms

The above numbers are reported from PowerStrip, so the two totals are not my bad adding. The VTotal should be 778 (768+3+6+1), but 772 is reported, and VScanRate should be 120 Hz, but (about) 240 Hz is reported, so something is wrong, but I do not know what. For those with a Windows programming ability, Microsoft has a page describing the VideoModeDescriptor Class
[url="http://msdn.microsoft.com/en-us/library/aa393966(VS.85).aspx"]http://msdn.microsoft.com/en-us/library/aa393966(VS.85).aspx[/url]

In contrast to stereo mode, PowerStrip reports the correct settings in normal 2D mode, because that is how I created the Linux ModeLine. The nine numbers in the Linux ModeLine are:
the pixel clock in MHz (= HTotal x VTotal x VRefreshRate = HTotal x HScanRate )
x-res
x-res + HFrontPorch
x-res + HFrontPorch + HSync
x-res + HFrontPorch + HSync + HBackPorch
y-res
y-res + VFrontPorch
y-res + VFrontPorch + VSync
y-res + VFrontPorch + VSync + VBackPorch

Using the settings reported by the monitor (when Vista is displaying stereo)
HScanRate = 185.2 KHz
VRefreshRate = 120 Hz
with the maximum pixel clock of the monitor of 245 MHz (from the manual)
HTotal can be no bigger than 1323 (so, x-res < 1320, i.e. < 1680!)
With HTotal=1323, and VRefreshRate=120 Hz, PixelClock=245 MHz,
VTotal can be no bigger than 1543 (so, y-res < 1540, so y-res could be 1050)
Which is of little help (to me, at least), as there are too many combinations of ModeLine to try.

If this is of any help, please update this topic.
This is how far I have got with this topic.



What I know from the monitor information panel

Horizontal (scan rate) Vert (refresh rate) sync polarity (+/-) resolution (ignore as auto-stretch)

Linux (120 Hz) 129.5 KHz 120 Hz PP 1680x1050

Vista (login screen) 129.5 KHz 120 Hz PP 1680x1050

Vista (stereo) 185.2 KHz 120 Hz PP 1680x1050



Linux settings in xorg.conf to give "Linux (120 Hz)" in above table



Modeline "1680x1050_120" 238.46 1680 1728 1760 1840 1050 1053 1059 1080 +hsync +vsync



Section "Extensions"

Option "Composite" "disable"

EndSection



Section "Screen"



# two options are a minimum for stereo on a DFP

Option "Stereo" "3"

Option "AllowDFPStereo" "yes"



# to force monitor to ModeLine settings for testing purposes

Option "UseEDID" "false"

Option "NoBandWidthTest" "true"

Option "ExactModeTimingsDVI" "true"

Option "ModeValidation" "DFP-0: NoEdidModes, AllowNon60HzDFPModes, NoMaxSizeCheck, NoMaxPClkCheck, NoMaxSizeCheck, NoXServerModes, NoPredefinedModes"





The Linux settings above replicate the Vista Login screen settings, and do not provide stereo display (in quad buffer mode).

Video settings may be reported from PowerStrip from http://entechtaiwan.com/util/ps.shtm which runs under Vista. When running PowerStrip and displaying stereo (again, in Vista, not Linux) PowerStrip cannot be seen. Swapping back to PowerStrip (Alt-Tab) results in the loss of stereo display. There is a logging feature of PowerStrip, but I could not get it to work (no need to swap back to PowerStrip). I reported the problem to the makers of PowerStrip but did not get a reply. However, using two screens (both Samsung 2233RZ) PowerStrip can run in the second monitor, and report on the first monitor, when the first is in stereo mode. However, the numbers reported are not self-consistent:

(table formatting got lost pasting from Word)



pixel clock [MHz], 329.786

sync, + / +

Horizontal scan rate (HScanRate) [KHz], 185.273

active (x-res), 1024, 3.105 us

front porch (HFrontPorch), 20, 0.061 us

sync width (HSync), 20, 0.061 us

back porch (HBackPorch), 716, 2.171 us

total (HTotal), 1780, 5.397 us

Vertical refresh rate (VScanRate) [Hz], 239.991

active (y-res), 768, 4.145 ms

front porch (VFrontPorch), 3, 0.016 ms

sync width (VSync), 6, 0.032 ms

back porch (VBackPorch), 1, 0.005 ms

total (VTotal), 772, 4.167 ms



The above numbers are reported from PowerStrip, so the two totals are not my bad adding. The VTotal should be 778 (768+3+6+1), but 772 is reported, and VScanRate should be 120 Hz, but (about) 240 Hz is reported, so something is wrong, but I do not know what. For those with a Windows programming ability, Microsoft has a page describing the VideoModeDescriptor Class

http://msdn.microsoft.com/en-us/library/aa393966(VS.85).aspx



In contrast to stereo mode, PowerStrip reports the correct settings in normal 2D mode, because that is how I created the Linux ModeLine. The nine numbers in the Linux ModeLine are:

the pixel clock in MHz (= HTotal x VTotal x VRefreshRate = HTotal x HScanRate )

x-res

x-res + HFrontPorch

x-res + HFrontPorch + HSync

x-res + HFrontPorch + HSync + HBackPorch

y-res

y-res + VFrontPorch

y-res + VFrontPorch + VSync

y-res + VFrontPorch + VSync + VBackPorch



Using the settings reported by the monitor (when Vista is displaying stereo)

HScanRate = 185.2 KHz

VRefreshRate = 120 Hz

with the maximum pixel clock of the monitor of 245 MHz (from the manual)

HTotal can be no bigger than 1323 (so, x-res < 1320, i.e. < 1680!)

With HTotal=1323, and VRefreshRate=120 Hz, PixelClock=245 MHz,

VTotal can be no bigger than 1543 (so, y-res < 1540, so y-res could be 1050)

Which is of little help (to me, at least), as there are too many combinations of ModeLine to try.



If this is of any help, please update this topic.

#4
Posted 04/15/2009 10:19 PM   
Thanks! I will try the modeline and Option "ModeValidation" as yours when im back in lab.
btw i got quite much modlines suggested (it even verifies mine to be correct, but then still sets 60hz) by
startx -- -verbose 6 --logverbose 6
and investigating /var/log/Xorg.0.log. (for other newcomers (like myself) to x config hacking)

Why didn't you get quadbuffer stereo on the config you described?
Thanks! I will try the modeline and Option "ModeValidation" as yours when im back in lab.

btw i got quite much modlines suggested (it even verifies mine to be correct, but then still sets 60hz) by

startx -- -verbose 6 --logverbose 6

and investigating /var/log/Xorg.0.log. (for other newcomers (like myself) to x config hacking)



Why didn't you get quadbuffer stereo on the config you described?

#5
Posted 04/18/2009 07:15 AM   
To get 120 Hz from a DFP in xorg.conf specify
Option "ModeValidation" "AllowNon60HzDFPModes"

An alternative to "-verbose 6" is to add this line in to xorg.conf
Option "ModeDebug" "on"

When trying quad-buffer, I still see a heavy ghost of the image from the other eye. The left and right images
each have a different brightness when viewed with shutter glasses, but too bright for useful stereo. When
viewed without the glasses, the two images are the same intensity.

Personally, I think the settings I am using are wrong, because when the monitor is in stereo mode under Vista,
the reported settings are different from the normal 2D mode (the normal 2D mode settings under Vista are
what I am using on Linux to try and get stereo).

You may like to know that the latest beta drivers
[url="http://ftp%3a%2f/download.nvidia.com/XFree86/Linux-x86/"]ftp://download.nvidia.com/XFree86/Linux-x86/[/url]
To get 120 Hz from a DFP in xorg.conf specify

Option "ModeValidation" "AllowNon60HzDFPModes"



An alternative to "-verbose 6" is to add this line in to xorg.conf

Option "ModeDebug" "on"



When trying quad-buffer, I still see a heavy ghost of the image from the other eye. The left and right images

each have a different brightness when viewed with shutter glasses, but too bright for useful stereo. When

viewed without the glasses, the two images are the same intensity.



Personally, I think the settings I am using are wrong, because when the monitor is in stereo mode under Vista,

the reported settings are different from the normal 2D mode (the normal 2D mode settings under Vista are

what I am using on Linux to try and get stereo).



You may like to know that the latest beta drivers

ftp://download.nvidia.com/XFree86/Linux-x86/

#6
Posted 04/21/2009 06:00 PM   
I got theSamsung SyncMaster 2233 screen running at 60, 100 and 120 Hz under Linux using the ELSA 3D Revelator and old Crystal Eyes shutter glasses. I have two problems:

1. The Samsung SyncMaster 2233 screen has a polarization. Therefore both classes stay black for a horizontal orientation and do only show the monitor image for a vertical orientation. Does anybody has the same problem? If you do not have such a problem what kind of classes are you using?
2. The sync is wrong. I think some of you have the same problem (extreme ghosting). The wrong sync is most obvious by displaying a blue image for one eye and a red image for the other. What you see if you close one eye is a color gradient from red to blue (full screen) and for the other eye a color gradient from blue to red. I do not observe this on my other monitor and also not on my projector. Does anybody know how to fix this?
I got theSamsung SyncMaster 2233 screen running at 60, 100 and 120 Hz under Linux using the ELSA 3D Revelator and old Crystal Eyes shutter glasses. I have two problems:



1. The Samsung SyncMaster 2233 screen has a polarization. Therefore both classes stay black for a horizontal orientation and do only show the monitor image for a vertical orientation. Does anybody has the same problem? If you do not have such a problem what kind of classes are you using?

2. The sync is wrong. I think some of you have the same problem (extreme ghosting). The wrong sync is most obvious by displaying a blue image for one eye and a red image for the other. What you see if you close one eye is a color gradient from red to blue (full screen) and for the other eye a color gradient from blue to red. I do not observe this on my other monitor and also not on my projector. Does anybody know how to fix this?

#7
Posted 05/13/2009 09:38 AM   
I had the polarization problem with some pairs of glasses, and all you can do is to either change the glasses or tilt your head 45 degrees. Placing a polarized sheet over the screen at a 45 degree angle to the polarization direction of the screen should also work, but I did not try this, as I do not have one
[url="http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/polcross.html"]http://hyperphysics.phy-astr.gsu.edu/hbase...t/polcross.html[/url]

The sync problem still remains.
I had the polarization problem with some pairs of glasses, and all you can do is to either change the glasses or tilt your head 45 degrees. Placing a polarized sheet over the screen at a 45 degree angle to the polarization direction of the screen should also work, but I did not try this, as I do not have one

http://hyperphysics.phy-astr.gsu.edu/hbase...t/polcross.html



The sync problem still remains.

#8
Posted 05/13/2009 06:33 PM   
[quote name='3Dmaniac' post='540574' date='May 13 2009, 11:38 AM']I got theSamsung SyncMaster 2233 screen running at 60, 100 and 120 Hz under Linux using the ELSA 3D Revelator and old Crystal Eyes shutter glasses. I have two problems:

1. The Samsung SyncMaster 2233 screen has a polarization. Therefore both classes stay black for a horizontal orientation and do only show the monitor image for a vertical orientation. Does anybody has the same problem? If you do not have such a problem what kind of classes are you using?
2. The sync is wrong. I think some of you have the same problem (extreme ghosting). The wrong sync is most obvious by displaying a blue image for one eye and a red image for the other. What you see if you close one eye is a color gradient from red to blue (full screen) and for the other eye a color gradient from blue to red. I do not observe this on my other monitor and also not on my projector. Does anybody know how to fix this?[/quote]

In my case the Polarization of the Syncmaster causes darkness in 45 degrees. I also have ghosting. It is stronger the further the protein is away from the z-Plane (this can easily be seen in chimera).

Will new drivers for Quadro cards remove the problem of ghosting? Will the NVidia classes work better in this setup than the Crystal Eyes classes?
[quote name='3Dmaniac' post='540574' date='May 13 2009, 11:38 AM']I got theSamsung SyncMaster 2233 screen running at 60, 100 and 120 Hz under Linux using the ELSA 3D Revelator and old Crystal Eyes shutter glasses. I have two problems:



1. The Samsung SyncMaster 2233 screen has a polarization. Therefore both classes stay black for a horizontal orientation and do only show the monitor image for a vertical orientation. Does anybody has the same problem? If you do not have such a problem what kind of classes are you using?

2. The sync is wrong. I think some of you have the same problem (extreme ghosting). The wrong sync is most obvious by displaying a blue image for one eye and a red image for the other. What you see if you close one eye is a color gradient from red to blue (full screen) and for the other eye a color gradient from blue to red. I do not observe this on my other monitor and also not on my projector. Does anybody know how to fix this?



In my case the Polarization of the Syncmaster causes darkness in 45 degrees. I also have ghosting. It is stronger the further the protein is away from the z-Plane (this can easily be seen in chimera).



Will new drivers for Quadro cards remove the problem of ghosting? Will the NVidia classes work better in this setup than the Crystal Eyes classes?

#9
Posted 05/15/2009 07:38 AM   
Any update ?
I just got mine, and i want to try my Ogre Active Stéréo on my quadro 4600
So could anyone give me his xorg.conf please.

Thanks
Any update ?

I just got mine, and i want to try my Ogre Active Stéréo on my quadro 4600

So could anyone give me his xorg.conf please.



Thanks

#10
Posted 06/18/2009 04:06 PM   
Still no progress on 3D under linux, but I have got Windows XP working with the NVIDIA 3D Vision emitter and glasses working with the Samsung 2233RZ monitor by following these instrustions:
[url="http://www.mail-archive.com/pymol-users@lists.sourceforge.net/msg07090.html"]http://www.mail-archive.com/pymol-users@li...t/msg07090.html[/url]

I could not get CrystalsEyes emitter and glasses to work in XP.
Still no progress on 3D under linux, but I have got Windows XP working with the NVIDIA 3D Vision emitter and glasses working with the Samsung 2233RZ monitor by following these instrustions:

http://www.mail-archive.com/pymol-users@li...t/msg07090.html



I could not get CrystalsEyes emitter and glasses to work in XP.

#11
Posted 07/31/2009 09:01 PM   
[quote name='Keitht' post='572611' date='Jul 31 2009, 11:01 PM']Still no progress on 3D under linux, but I have got Windows XP working with the NVIDIA 3D Vision emitter and glasses working with the Samsung 2233RZ monitor by following these instrustions:
[url="http://www.mail-archive.com/pymol-users@lists.sourceforge.net/msg07090.html"]http://www.mail-archive.com/pymol-users@li...t/msg07090.html[/url]

I could not get CrystalsEyes emitter and glasses to work in XP.[/quote]

Keitht,

we have got the same problem as you initially described, only under XP.

Bad enough, neither we are able to get CrystalEyes/ NuVision emitter and glasses under XP to work with Samsung 2233rz. Our app uses quad buffer technology and we had no problem with CRT monitors, but now we would like to move towards LCD.

It would be nice, if anybody with similar problem would share his experience in troubleshooting with us.

I am not quite sure, this could be the issue for Samsung forum, rather than this one... :unsure:
[quote name='Keitht' post='572611' date='Jul 31 2009, 11:01 PM']Still no progress on 3D under linux, but I have got Windows XP working with the NVIDIA 3D Vision emitter and glasses working with the Samsung 2233RZ monitor by following these instrustions:

http://www.mail-archive.com/pymol-users@li...t/msg07090.html



I could not get CrystalsEyes emitter and glasses to work in XP.



Keitht,



we have got the same problem as you initially described, only under XP.



Bad enough, neither we are able to get CrystalEyes/ NuVision emitter and glasses under XP to work with Samsung 2233rz. Our app uses quad buffer technology and we had no problem with CRT monitors, but now we would like to move towards LCD.



It would be nice, if anybody with similar problem would share his experience in troubleshooting with us.



I am not quite sure, this could be the issue for Samsung forum, rather than this one... :unsure:

#12
Posted 08/20/2009 12:16 PM   
We're also trying to get a 2233RZ working under Linux with NuVision glasses. Using the configuration changes detailed above the stereo emitter is now enabled when running a stereo application. However, it appears there may be a timing problem - we only see stereo in about the bottom 1/3 of the monitor and the upper 2/3 shows both left and right images to both eyes (this may be the 'extreme ghosting' effect which was mentioned - in the part of the screen which does display stereo the ghosting is no worse than on a CRT monitor).
[edit]
Having looked in more detail, we see a similar effect to 3Dmaniac. At the top of the display the ghosting occasionally allows perception of an inverted stereo image, in the middle both left and right are of equal brightness and at the bottom the ghosting fades to give a pretty decent stereo image. The apparent sharp cutoff between stereo and two overlaid images is purely perceptual - there is actually a smooth gradation of each image up or down the screen. I think this only makes sense if the glasses are switching roughly in the middle of each frame rather than between them.
[/edit]
Does anyone know if there is a way to adjust the timing of the sync signal to the glasses?

With regard to the polarisation effect, the NuVision glasses are polarised at 45 degrees relative to the monitor so there are no problems of differential brightness as long as your head is upright.
We're also trying to get a 2233RZ working under Linux with NuVision glasses. Using the configuration changes detailed above the stereo emitter is now enabled when running a stereo application. However, it appears there may be a timing problem - we only see stereo in about the bottom 1/3 of the monitor and the upper 2/3 shows both left and right images to both eyes (this may be the 'extreme ghosting' effect which was mentioned - in the part of the screen which does display stereo the ghosting is no worse than on a CRT monitor).

[edit]

Having looked in more detail, we see a similar effect to 3Dmaniac. At the top of the display the ghosting occasionally allows perception of an inverted stereo image, in the middle both left and right are of equal brightness and at the bottom the ghosting fades to give a pretty decent stereo image. The apparent sharp cutoff between stereo and two overlaid images is purely perceptual - there is actually a smooth gradation of each image up or down the screen. I think this only makes sense if the glasses are switching roughly in the middle of each frame rather than between them.

[/edit]

Does anyone know if there is a way to adjust the timing of the sync signal to the glasses?



With regard to the polarisation effect, the NuVision glasses are polarised at 45 degrees relative to the monitor so there are no problems of differential brightness as long as your head is upright.

#13
Posted 09/09/2009 08:06 AM   
Hi everyone. Thank you for the information published here. I followed the recommendations made in the thread and was able to display 120 Hz in Stereo under 64bit OpenSuse 11.1 using the latest beta driver 190.32

However as mentioned in the thread. Once you try and use the glasses there is significant crosstalk and stereo is not viable. Also either from polarization alignment or driving method both Nuvision 60GX and Crystaleyes will not work with the monitor.

My experience on this has been the following.

1 - Tested monitor & nvidia glasses with suggested Geforce card on Windows Vista and worked correctly. Noticed slight color shifting using my own test images. But Stereo very good.
2 - Tested monitor & nvidia glasses on Win XP with Quadro FX 3400 card on Windows XP and stereo did not work. Crosstalk was very high, very similar to what cearnsh describes.
3 - Tested monitor & nvidia glasses on Win XP with Quadro FX 3700 card on Windows XP and stereo did work very well, just as in vista.
4 - Attempted to test the monitor & nvidia glasses with the Quadro FX 3700 and Linux and got similar results as I had had with the Quadro XP 3400 on XP.

Both case 2 & 4 include a sort of slow attenuation of red and blue colors once every second or so... I can almost match it to my breathing. This also happens on cases 1 and 3 but is almost unnoticeable.

Anyways, my conclusion from this is that the linux driver does not use the full resources of the video card for stereo and the dual DVI cable so the monitor ends up doing additional work (maybe from ADC) or as Keitht suggests the settings are not correct yet.

Anyone knows where one can read on how the settings are defined or basic xorg.conf information to give this another try?
Hi everyone. Thank you for the information published here. I followed the recommendations made in the thread and was able to display 120 Hz in Stereo under 64bit OpenSuse 11.1 using the latest beta driver 190.32



However as mentioned in the thread. Once you try and use the glasses there is significant crosstalk and stereo is not viable. Also either from polarization alignment or driving method both Nuvision 60GX and Crystaleyes will not work with the monitor.



My experience on this has been the following.



1 - Tested monitor & nvidia glasses with suggested Geforce card on Windows Vista and worked correctly. Noticed slight color shifting using my own test images. But Stereo very good.

2 - Tested monitor & nvidia glasses on Win XP with Quadro FX 3400 card on Windows XP and stereo did not work. Crosstalk was very high, very similar to what cearnsh describes.

3 - Tested monitor & nvidia glasses on Win XP with Quadro FX 3700 card on Windows XP and stereo did work very well, just as in vista.

4 - Attempted to test the monitor & nvidia glasses with the Quadro FX 3700 and Linux and got similar results as I had had with the Quadro XP 3400 on XP.



Both case 2 & 4 include a sort of slow attenuation of red and blue colors once every second or so... I can almost match it to my breathing. This also happens on cases 1 and 3 but is almost unnoticeable.



Anyways, my conclusion from this is that the linux driver does not use the full resources of the video card for stereo and the dual DVI cable so the monitor ends up doing additional work (maybe from ADC) or as Keitht suggests the settings are not correct yet.



Anyone knows where one can read on how the settings are defined or basic xorg.conf information to give this another try?

#14
Posted 09/24/2009 01:14 PM   
Report from Windows XP x64. With a Quadro 3450, Crystal Eyes 3 active shutter, and VX2260wm. I ended up with "extreme ghosting" and polarization problems described above. For the reference of those who haven't stumbled on the link yet, the 191 drivers are available for windows (but not for Linux yet) [url="http://www.nvidia.com/object/quadro_pro_graphics_boards.html"]here[/url] and will allow you to set 60, 100, and 120 Hz refresh rates. By screen midline there was still CONSIDERABLE crosstalk. There was some attenuation of signal from the other eye, but not enough to enable stereo viewing. Are those of you with the Nvidia glasses using the DIM connector or the USB connector? I noticed that Crystal Eyes 3 reports a 1500:1 contrast ratio while Crystal Eyes 5 reports a 5000:1 contrast ratio. Could NVidia be using similar newer technologies (and of course matched polarities) to overcome what appears with the older technology to be "extreme ghosting", or is this mostly the fault of the video card?
Report from Windows XP x64. With a Quadro 3450, Crystal Eyes 3 active shutter, and VX2260wm. I ended up with "extreme ghosting" and polarization problems described above. For the reference of those who haven't stumbled on the link yet, the 191 drivers are available for windows (but not for Linux yet) here and will allow you to set 60, 100, and 120 Hz refresh rates. By screen midline there was still CONSIDERABLE crosstalk. There was some attenuation of signal from the other eye, but not enough to enable stereo viewing. Are those of you with the Nvidia glasses using the DIM connector or the USB connector? I noticed that Crystal Eyes 3 reports a 1500:1 contrast ratio while Crystal Eyes 5 reports a 5000:1 contrast ratio. Could NVidia be using similar newer technologies (and of course matched polarities) to overcome what appears with the older technology to be "extreme ghosting", or is this mostly the fault of the video card?

#15
Posted 10/18/2009 01:58 AM   
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