Gigabyte X570 Aorus w/ GeForce RTX 2060 SUPER - won't detect 4th display

Title on new load of openSuSE 15.1 using 450.57 driver. No matter how I connect my 4 displays ( 3 x Ancor Communications Inc ASUS VN247) + 1 x BBY NS-24D510NA15 ( HMDI port or Display Port), the last display attached is never detected. I have configured BIOS to manually set PCIe to Gen 3 to no avail.

All display panels work, all cables work. I had the same configuration on a ASRock Fatal1ty X399 with 1060 using a 390(?) driver without issues. On both systems I have secure boot running. Neither systems are dual boot - Linux only.

nowy-wielki-zamek:/ # nvidia-smi
Sun Aug 9 21:44:35 2020
±----------------------------------------------------------------------------+
| NVIDIA-SMI 450.57 Driver Version: 450.57 CUDA Version: 11.0 |
|-------------------------------±---------------------±---------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 GeForce RTX 206… Off | 00000000:08:00.0 On | N/A |
| 31% 34C P8 16W / 184W | 466MiB / 7979MiB | 3% Default |
| | | N/A |
±------------------------------±---------------------±---------------------+

±----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 3784 G /usr/bin/X 258MiB |
| 0 N/A N/A 4089 G kwin_x11 52MiB |
| 0 N/A N/A 4097 G /usr/bin/krunner 5MiB |
| 0 N/A N/A 4099 G /usr/bin/plasmashell 137MiB |
| 0 N/A N/A 4162 G /usr/bin/ksysguard 5MiB |
| 0 N/A N/A 5339 G /usr/bin/nvidia-settings 0MiB |
±----------------------------------------------------------------------------+
nowy-wielki-zamek:/ #

nvidia-bug-report.log.gz (1.4 MB)

I can’t be 100% sure here but i think Nvidia only supports 3 monitors for their “non pro version” ie you need nVidia Quadro for more displays. Don’t quote me on this (trying to find any official source atm)
Found other posts that 4 should be supported;

Correct - product documentation clearly states that 4 monitors are supported. Also, as mentioned earlier, but not quite relevant, the GTX 1060 3Gb also supported the exact same configuration (the same 4 display panels).

Thank you for contributing, Commander.