SLI Problems with DVI Display

[Mirra]

Hi,
I have a big problem with my SLI config(Asus A8N-SLI and 2x 6800GT).
When I put on my TFT Display(DVI) I can't aktivate the SLI mode cause a second Display is found on the second card. Of course this display doesn't exist.
So I can't turn on the SLI mode.
When I disable SLI in my Bios no second Display is recognized. But when I enable SLI again a second "ghost display" apears in my drivers.
When I boot with a CRT I can set SLI without a problem.
When I reboot with my TFT SLI is aktivatet but I can't set the correct Display Modes for my widescreen TFT. When I start a game or bench I have strange flickering and have to reboot.

Is there a workaround for this Problem? Or does SLI not work with digital Displays?
I tried 3 different Drivers but the problem is the same.

 

[Astratuner]

i got exactely the same problem


crt = sli works 6000 pts

tft = 3000 pts :s


i don't understand this mess

 

[dworley]

Make sure you are using the card in the "blue" slot with your DVI cable plugged into the "top" connector as it is the primary video port.


The only problem I am experienceing with my SLI setup is that when I set any Widescreen resolution in HL2/CS:S the screen looses sync , like the refresh rate is wrong.

I have tried 1600x1050 and 1600x900 with all recent drivers 66.93, 67.03, 70.90, 71.20 and 71.24 using a Dell 2005FPW. If I set any 4:3 aspect ratio (1280x1024) it works fine. Also tried my Dell 20000FP at 4:3 1600x1200 with no problems.

Note: On my Shuttle SB75G2 using a BFG 6800GT OC with the Dell 2005FPW I can run 1600x1050 in HL2 / CS:S no problems with any recent driver.

I suspect this is a driver issue with SLI running Widescreen rsolutions in games and wanted to see if anyone else was having this problem?

--------------------------------
ASUS A8N-SLI DELUXE (bios 1003.005)
Athlon 64 FX-55
512mb X 2 Corsair XMS 3200C2
BFG 6800GT OC x 2 / SLI MODE
OCZ ModStream 520W
Thermaltake Tsunami Dream case
Thermaltake Big Water cooling kit
Arctic Cooling NV5 Silencer (2)
Dell 2005FPW

 

[Astratuner]

dworley do u have a crt or a lcd monitor ?

greetz

 

[WaxHaX0rS]

May seem like a dumb question, but have you tried plugging the monitor into the other graphics card? Maybe your monitor IS on the second card. I dunno though.

 

[DrRios]

Hi:

I have the same trouble.

the Nvidia driver works different if you have a "analog connection - with the adapter" vs a DVI connection. Some tabs where turn "OFF" by Nvidia in the Nview DESKTOP MANAGER when you use the DVI connector and are not being supported until the release of the next set of drivers.

I have a Velocity Micro Raptor dual PCI-e with 6800 GT (2) and SLI "ON"

The machine will work fine if the monitor if I use an old dual monitor that has both DVI and "analog" connectors, even when connected to DVI.

If the monitor is pure digital, or one of the lattest model. The card will identify this and will use the Pure DVI driver subrutine. This has advance timming "off". As a result SLI only support high definition monitor at their native resolution (Apple Cine, HDTV -LCD, Plasma and some Viewsonic Monitors). Monitor with 1920x1200 or more. Changing to a lower resolution will turn the creen into garbaje. OUT OF SYNC.

Nvidia knows about this and have erase all connects in their SLI site. If you have a SLI and DVI monitor try turning SLI "OFF" in the driver (NVIDIA TAB) reboot and then try to turn it back "ON" you will not be able to. So be very careful. Then you will get the two monitor like is mentioned here. The only was to go back is using system restore.

Playing games in those pure digital monitors can not be done with actual driver for SLI, changing to a lower resolution (most games are 1024 or less) will result in a garbage screen. The ystem will work fine if SLI is turn "off" but the other card will be there for the ride.

The only solution is to use a LCD monitor with dual connectors (that has both connector "analog and digital" ) or a CRT

The idea of SLI was to run games at higher resolution but Nvidia put the system put before the drivers where ready.

NVIDIA has failed miserably with this release.....
Text

 

[DrRios]

SLI DOES NOT WORK WITH PURE DIGITAL DISPLAYS !!!!

SOYLEN GREEN IS PEOPLE !!!

NVIDIA STIFF US !!

 

[Astratuner]

Originally posted by: DrRios
Hi:

I have the same trouble.

the Nvidia driver works different if you have a "analog connection - with the adapter" vs a DVI connection. Some tabs where turn "OFF" by Nvidia in the Nview DESKTOP MANAGER when you use the DVI connector and are not being supported until the release of the next set of drivers.

I have a Velocity Micro Raptor dual PCI-e with 6800 GT (2) and SLI "ON"

The machine will work fine if the monitor if I use an old dual monitor that has both DVI and "analog" connectors, even when connected to DVI.

If the monitor is pure digital, or one of the lattest model. The card will identify this and will use the Pure DVI driver subrutine. This has advance timming "off". As a result SLI only support high definition monitor at their native resolution (Apple Cine, HDTV -LCD, Plasma and some Viewsonic Monitors). Monitor with 1920x1200 or more. Changing to a lower resolution will turn the creen into garbaje. OUT OF SYNC.

Nvidia knows about this and have erase all connects in their SLI site. If you have a SLI and DVI monitor try turning SLI "OFF" in the driver (NVIDIA TAB) reboot and then try to turn it back "ON" you will not be able to. So be very careful. Then you will get the two monitor like is mentioned here. The only was to go back is using system restore.

Playing games in those pure digital monitors can not be done with actual driver for SLI, changing to a lower resolution (most games are 1024 or less) will result in a garbage screen. The ystem will work fine if SLI is turn "off" but the other card will be there for the ride.

The only solution is to use a LCD monitor with dual connectors (that has both connector "analog and digital" ) or a CRT

The idea of SLI was to run games at higher resolution but Nvidia put the system put before the drivers where ready.

NVIDIA has failed miserably with this release.....
Text

that is what i wanted to hear


so for now we must wait untill nvidia releases a new driver wich should fix this problem ?

 

[DrRios]

yes

or turn SLI off for now until the proepr driver is release.

I am busy this week, but in the weekend if no beta is posted in the net I plan to remove one of my PCI-E cards and turn over the mobo selector...

 

[DrRios]

there is a new driver in web site Beta


http://nzone.com/object/nzone_...ds_winxp_2k_67.66.html

Any one with Pure Digital dares to try it to see if it fixes the issue...

I am busy until weekend
http://nzone.com/object/nzone_...ds_winxp_2k_67.66.html ">new driver beta</a>

 

[DrRios]

Well even when I was realy tired..

try new Beta driver 66.77

No sucess, in reality turn the Beta turn s SLI FF" and I was not able to turn it back "ON" with the Apple CInema dysplay.


SO I had to unistall and use system restore...

thanks good for this ( I will never have imagine that I will tanking Microsoft for anything)

 

[Astratuner]

i git sli back to work at least for 1 time in 3dmark05

i dl SLI Game Launcher 1.2.126 BETA

and now i see a nvapps.xml file and there u have to change the value's in order to activate sli for the application


that how i find out!!!

but now is sli not working in 3dmark05 very strange :s cause it whas working before and i get 200% improvment!!!

 

[Gunnman]

Goto www.3dchipset.com and download the new nforce and video drivers . Also you can download the SLI profiler and custom set all of your games.

 

[DrRios]

Nvidia has a new driver 71.89
placed in the web 2 -5 days ago

Is the first driver that will allow to turn "off" SLI in a ASUS Deluxe from the driver and back "on" with no difficulty and no lock.

this will allow Apple Cinema used to turn SLI "off" so they can play games in a lower resolution than native.

SLI work fine in native 1900x1200 resolution but most games do not go to this resolution.

Nvidia in the Release Notes for this driver for the first time admits there is an issue with Apple Cinema monitors and SLI and recommends to use NVIDIA 6800 Ultra with 512 MB ( and pass on SLI) for now...

http://download.nvidia.com/Windows/71.89/71.89_ForceWare_Release_Notes.pdf

RELEASE NOTES FROM NVIDIA FOR DRIVER 71.89

page 12...