nVidia, on board graphics and black screen after sleep

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Hey there,

I am rocking a Fedora 42 (vanilla) on a:
Lenovo ThinkCentre neo 50t Gen 4, with 13th Gen Intel® Core™ i5-13400 × 16.
Recently, I installed NVIDIA T600.
The machine has an on chip graphics (Intel® UHD Graphics 730 (ADL-S GT1)) which is more than enough for my day to day. Besides, I don’t have enough (any) mini DP cables to connect all of my monitors.
I added the T600 for two reasons:

  1. I occasionally do some 3D renderings (very simple ones).
  2. A colleague got a new computer and she had the T600 in the old one.

I actually have two issues:

  1. How do I know I use the T600 when I need to render 3D (e.g. in FreeCAD and\or Blender)?
  2. When returning from “sleep” I get a blank screen, that is to say: the screens doesn’t wake up (I had two, and now I had three. Isn’t scavenging fun? :slight_smile: ).
    I did noticed that in the about screen of GNOME I have the nVidia as “Graphics”, while the Intel is “Graphics 1”.

Please help.