nV News Forums - View Single Post - intermittent failure to detect both screens on fx4800 with recent drivers

**danix** · 04-27-10, 02:45 PM

Thanks for reporting this. This sounds similar to an issue we are currently investigating.

The Quadro FX 4800 has one DVI, and two DisplayPort connectors. The HP LP2475w has both DVI and DP.

How are these monitors connected? One is showing up as dual-link TDMS, and one single link. I'm assuming you're using a dual-link DVI cable for one, and a passive DVI single link DP-DVI dongle for the other.

Is the monitor that fails always the one on the DP dongle, if a dongle is used?

Does disabling hot plug detect support on the monitor(s) make the issue go away?

04-27-10, 02:45 PM	#3
danix NVIDIA Corporation Join Date: Feb 2010 Location: Santa Clara, CA Posts: 237	Re: intermittent failure to detect both screens on fx4800 with recent drivers Thanks for reporting this. This sounds similar to an issue we are currently investigating. The Quadro FX 4800 has one DVI, and two DisplayPort connectors. The HP LP2475w has both DVI and DP. How are these monitors connected? One is showing up as dual-link TDMS, and one single link. I'm assuming you're using a dual-link DVI cable for one, and a passive DVI single link DP-DVI dongle for the other. Is the monitor that fails always the one on the DP dongle, if a dongle is used? Does disabling hot plug detect support on the monitor(s) make the issue go away?