Nvidia discrete graphic card not working

[mateusrodcosta (Mateus Rodrigues Costa)]

@pmozzati

After disabling secure boot and re-installing nvidia driver I get the same result as in previous post.
Here the output of nvidia-smi

nvidia-smi 
Thu Nov  2 19:41:41 2023       
+---------------------------------------------------------------------------------------+
| NVIDIA-SMI 535.113.01             Driver Version: 535.113.01   CUDA Version: 12.2     |
|-----------------------------------------+----------------------+----------------------+
| 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  Quadro P520                    Off | 00000000:3C:00.0 Off |                  N/A |
| N/A   32C    P8              N/A / ERR! |      1MiB /  2048MiB |      0%      Default |
|                                         |                      |                  N/A |
+-----------------------------------------+----------------------+----------------------+
                                                                                         
+---------------------------------------------------------------------------------------+
| Processes:                                                                            |
|  GPU   GI   CI        PID   Type   Process name                            GPU Memory |
|        ID   ID                                                             Usage      |
|=======================================================================================|
|    0   N/A  N/A      4463      G   /usr/bin/gnome-shell                          0MiB |
+---------------------------------------------------------------------------------------+

I also run a Nvidia Optimus system, Just this output is enough to tell me that your Nvidia dGPU is running fine.

To be sure, try to run something GPU intensive (a game or a tool, anything could do) and run nvidia-smi again, the process for whatever program you ran will appear as well.

A tip I give you is to enable runtime power management:

https://rpmfusion.org/Howto/Optimus#NVIDIA_PRIME_Support

Read a bit of the other stuff on the same page for more info.

Just a important note, NVIDIA DOESN’T SUPPORT PRIME RENDER OFFLOAD ON WAYLAND.
It works for Xorg and Xwayland application, but it doesn’t work under Wayland.

This means that if an application tries to use the GPU under Wayland it might instantly crash (I had this issue with Cemu and yuzu, for example), the solution is to force the application to run under Xorg. The new 545 driver might have changed that, but dunno yet.