GNOME desktop is giving black screen when launched on NVIDIA Quadro K5000 card with RHEL 7.5

We are trying to launch an xserver display with the below attached xorg.conf configuration on a headless machine with an NVIDIA Quadro K5000 card and RHEL 7.5 installed on it.

The xserver is launched properly, but the display is coming black when trying to access it and we can’t interact with it. We are using the GNOME desktop manager.

Xorg.conf file contents:

We have also observed the same problem on two more headless machines where the first one has Quadro K4000 with RHEL 7.9 installed on it, and the second machine has Quadro K5000 with RHEL 8 installed on it.

Surprisingly, on all these machines MATE and KDE desktop managers are working properly. The problem is only with GNOME, not sure if GNOME expects anything extra on these cards.

Also, when we ran xradr command on this display, we are not seeing any connected display output and this behavior is common across all the above machines.

Xrandr output:

Another interesting thing is, we also have headless machines with Tesla T4 cards and RHEL 7.5 and RHEL 8 installed on them. The GNOME desktop is coming properly, with similar configurations. We are seeing this problem only on the NVIDIA Quadro series cards.

Please help!