Comment # 2 on bug 1206863 from Stefan Dirsch

(In reply to Cameron Seader from comment #0)
> Additional Notes:
> This setup requires the open nvidia drivers as verified by nvidia and will
> not work with their proprietary drivers. I have tried this and verified that
> proprietary does not work because of some signature check from the Dell 5570
> laptop. I'm not sure how to disable those checks.

This sounds weird to me. I mean with Secureboot enabled you need to sign both
driver modules, no matter if it's opensource or proprietary. Things are
probably
even more complicated with the opensource driver since it requires you to set
the driver option 'NVreg_OpenRmEnableUnsupportedGpus=1' on such a desktop GPU.
Seems to be some other signature check.

I guess you have already read my blog article

  https://sndirsch.github.io/nvidia/2022/06/07/nvidia-opengpu.html

> System:
> Dell Precision 5570 - Thunderbolt 4
> eGPU Mantiz w/ Nvidia RTX 3070, 3 attached displays

So, this is Intel GPU on the laptop + the eGPU, right? Could you provide output
of "inxi -aG" with the eGPU connected, please?