I have an MSI 9800 pro with D-SUB and DVI-D ports. I have connected both ports to my NEC LCD1935NXM monitor. I am using the latest catalyst drivers from ATI and did not succeed in driving the LCD using the DVI port. This seems to be a common problem among LCD owners.
When XP is loading, I have an image until the windows logon. So I assume that an analog connection is required if windows is not running (such as when changing BIOS settings). Is that correct? If that is so, an LCD monitor can’t be used only with a stand-alone DVI connector. When I pull the DVI cable, the image comes back. And vice-versa goes blank when I reconnected the DVI cable. So the LCD monitor is detecting a DVI signal and is switching automatically to process the signal from the DVI port. So I figure that no image is generated by my video card on the DVI port.
With a normal boot, there is no way I could get the catalyst drivers to detect the LCD through the DVI port (I get a cross on the FPD connector on the displays page of the ATI control panel). Anyways, when I plug the DVI cable, the LCD goes blank and I can’t see a thing! This made no sense … So I booted in VGA mode (using F8 during boot) with both connectors plugged in and I did not loose the image. I normally installed the digital drivers for the LCD and set the PFD as primary display and the monitor as secondary (by the way, it will not work if the TV out is enabled, so it has to be turned off). The primary display is using the analog driver and the PFD the digital driver.
I rebooted normally and I thought it was working. I thought. When I pulled the D-SUB cable, I lost the image! So the image I was getting was not from the primary display (small target symbol on the ATI panel) but from the secondary (double rectangle symbol).
So what is wrong there? I have read around the internet and I am seeing that others have the same problem. But no one has an answer.
Any idea ?
Thanks
Sil
