Help with Geoforce 6800, SLI and 23 Monitor

JavaAddict

Junior Member
Jan 13, 2005
6
0
0
I post this issue in General HW, but thought I might get some technical help/opinions this forum. (I hope this is OK. I am bit of a newbie and open to any advice. All the options in the video settings, it would seem something might be overlooked technically. (Where is that magic button?)

PS Has anyone got an SLI rig with a 23" widescreen actually to work? I am seeing horror stories in the forums. (Maybe you never see the good stuff).

_____________________________________

I need some input and emotional support. Sorry for a little story, but my 7 grand dream machine is causing nothing but troubles. Had the machine 1 hour, and it totally died. No power at all. No matter how much resetting, pounding, could bring it back to life. RMAd back to Velocity Micro. They rebuilt the system got it running. They installed Doom 3 and tested on a 17" or 18" monitor. (1280X1024).

Received the systems, no shutdowns, but no support for running games full screen. The problems lies in that I have 23" monitor. When right clicking on the display, the system recognizes the Cinema HD Display and supports the native resolution of 1920 x 1200. Desktop and Office Apps run fine. This is with SLI enabled and with the 66.93 drivers.

However, when I look at the resolution slider, it only has very limited resolution options, 800 x 600, 1024 x 768, 1280 x 1024, and 1920 x 1200. When I connect the diplay to even my old shuttle with ATI 9700 AIW, I get the all the resolutions options including 1600 x 1200, 1152 x 864, etc.

When I start DOW 40K or Doom 3, the screen is unviewable. I had to connect on old 18 LCD to the system, decipher the screen garbage, set the game to the highest setting it could support, reconnect the cinema display, again was just barely able to decipher the menu options to get the game settings to the 1600 x 1200 setting. Restart the game, Doom 3 fills the screen from top to bottom, but fills the screen from the left and appears to stop at the horizontal 1600 pixel. Not in a window, just stops. Hence, you can still see the time and task bar icons. (This process doesn't work for DOW) I have called EVGA support and Vel Micro support and no ones has even tested on a 23" monitor and don't even have one in the lab. When I ask about possible settings for interpolation, the tech didn't know what it meant.

I have a Dell XPS with a X800XT, on loan, runs everything fine. Not one problem with any game on the 23" monitor. Doom 3, DOW, HL2, ect., all fill the screen and run at 1600 x 1200.

Anybody else having problems with SLI and Geoforce 6800 Ultras? Any suggestions? Am I crazy to ask Velocity Micro to give a full refund?
 

DrRios

Member
Jan 16, 2005
59
0
0
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.....

If you find someone that have make a 23 inch Apple Cinema work let me know
Text
 

number9

Member
Sep 19, 2004
53
0
0
would it work if i used one of those VGA boxes (ADC -> VGA box) to connect my apple cinema display to the SLi rig?
 

DrRios

Member
Jan 16, 2005
59
0
0
any VGA system works fine with SLI

but the apple cinemas are pure digital so they don't....

Nvidia needs to upgrade their drivers !!!!

 

DrRios

Member
Jan 16, 2005
59
0
0
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...