GPU driver broken after enabling secure boot

General Help
21

Hm, doesn't work...

Sun Jan 25 19:15:53 2026       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.126.09             Driver Version: 580.126.09     CUDA Version: 13.0     |
+-----------------------------------------+------------------------+----------------------+
| 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  NVIDIA GeForce RTX 4080 ...    Off |   00000000:01:00.0  On |                  N/A |
| 44%   59C    P0            261W /  320W |   10110MiB /  16376MiB |     85%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+

+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|    0   N/A  N/A            1858      G   /usr/lib/xorg/Xorg                      258MiB |
|    0   N/A  N/A            2027      G   /usr/bin/gnome-shell                    111MiB |
|    0   N/A  N/A            2701      G   /opt/Mullvad VPN/mullvad-gui             26MiB |
|    0   N/A  N/A            4803      G   ...share/Steam/ubuntu12_32/steam          4MiB |
|    0   N/A  N/A            4993      G   ./steamwebhelper                          5MiB |
|    0   N/A  N/A            5023    C+G   ...am/ubuntu12_64/steamwebhelper          9MiB |
|    0   N/A  N/A            5155      G   /usr/bin/nextcloud                        3MiB |
|    0   N/A  N/A            5176      G   firefox                                 152MiB |
|    0   N/A  N/A           20268    C+G   ...077\bin\x64\Cyberpunk2077.exe       9356MiB |
+-----------------------------------------------------------------------------------------+
22

Can anyone help me, why its still not working?
@Aravisian @Forpli?

Help is much appreciated! Thanks!

23

What is your terminal output for:

glxinfo | grep -i "OpenGL renderer"

and

glxinfo | grep -i "OpenGL version"

24 
string: NVIDIA GeForce RTX 4080 SUPER/PCIe/SSE2

and for

glxinfo | grep -i "OpenGL version"

string: 4.6.0 NVIDIA 580.126.09
25

Looking at this and your SMI output, it looks like you are on Prime Select setting. The above output shows Nvidia fully engaged - the SMI output shows Nvidia on Demand.
But if it is hybrid, that would make sense.

We can definitely conclude that the Nvidia card is fully working and rendering. So the issue is - you are getting low FPS, is the one remaining contention, right?

26

A post was split to a new topic: Secure Boot with Nvidia

27

Yes, correct!