Mar 17 2022 09:10 AM - edited Mar 17 2022 09:27 AM
Hello,
Scenario:
Server 1: T420, Dual Proc, 384 gigs of ram, Dell Nvidia Quadro 4000x(2) .
Situation 1(fails): 2 monitors plugged into each card for a total of 4 monitors. However, only 2 will have a picture. Depending on the order of plugging in the cable determines which monitors get a picture. So I only get 2 monitors
Situation 2(fails): (Same Server) I removed 1 of the Nvidia Q4000 cards. I plugged in 2 monitors and they displayed. I then used a USB WavLink, which has 2 additional (wimpy GPU) outputs. Again only 2 monitors will display. No matter what order I plug in, its just 2.
Situation 3 (works): (Same Server) I have another NVidia Card that supports 3 monitors for sure. So I unplugged the WavLink, Removed the Q4000 card and installed the Nvidia 1050 card. plugged in all the monitors and Bingo all of them lit up properly.
I am able to repro this on all my Dell T420s.
What I have tried:
I'm lost... I really need to get this working so I would appreciate any thoughts, etc.
P.S. Yes I did reach out to Nvidia and Dell and each one of them blames the OS... but I have no idea how or why.
P.S.S. If I have all the cables plugged in and it only shows 2, if I unplug one of the cables for the monitor that is showing, it goes off and the one that wasn't on, comes on.
Thanks!!
Mar 17 2022 07:46 PM
The hardware looks a little old so I wouldn't expect too much.
Mar 18 2022 12:38 AM
Mar 18 2022 07:59 AM
You'll likely need to start by installing a supported operating system to figure things out.
Mar 18 2022 08:33 AM
Mar 18 2022 08:35 AM
Always expect the unexpected when you install an unsupported operating system. Might also ask in the dell forums to see if other users have some sort of work-around.