GeForce Go 6800 don't detect DVI monitor

loshal

My Fujitsu-Siemens Amilo M4438G (laptop) with a GeForce Go 6800 graphics card don't seem to detect an external monitor connected to the DVI connector. When I start up the computer is first the BIOS startup screen followed by the Windows XP boot screen shown on both the internal and external display. But the Windows login screen is only shown on the internal display, the external monitor becomes black and indicates no input signal.

When I open the nVidia tab on display properties the tab for "nView Dispaly Settings" isn't there. Instead there is a tab called "Digital Flat Panel Settings". So it seems as if the graphics card don't detect the external monitor.

The external monitor works if I use a DVI to VGA adapter and connects to the VGA input of the monitor. Using this connection I can find the "nView Display Settings" tab.

The external monitor also works when I start in Windows XP safe mode.

I've tested with my Samsung 940B monitor and a HP monitor and can't get the DVI to work. But it does work with a Dell 1800FP!!!

Graphics driver version: 79.11 (the latest supplied by F-S).
Video bios version: 5.41.02.39.49.

Does anyone have an idea about what might cause this problem?

dominik

I'm had a very similar problem with my desktop and nVidia 6800 GT, to which I have a VGA and DVI monitors connected. Both monitors display BIOS startup and Windows XP but the DVI monitor goes blank on log in.

While I am still looking for a resolution to this issue (and thus found this post via Google), I did manage to get this strange workaround to get a display on the DVI monitor.

1. I go into display properties
2. I change the resolution of the DVI monitor to 800x600 -- at this point the DVI monitor displays again
3. Windows asks if I'm sure. I hit no, reverting the resolution back to 1280x1024, which the DVI monitor displays.

Edit: Updating my drivers to ForceWare 93.71 (November 2006) fixed the problem for me. http://www.nvidia.com/object/winxp_2k_93.71.html

loshal

Hi Dominik!

So the new driver fixed the problem? I've just sent my laptop to service since I thought it was a hardware problem!

I upgraded the driver to 84.25 but that didn't help. I don't think I can use the driver that worked for you since I have a laptop (and swedish operating system) but I believe that there are other modified drivers in the 90's series on http://www.laptopvideo2go.com. If the display doesn't work after the computer cames back from service I'll try one of those drivers.

Regards,

Per