NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver

Graphics / Linux Linux
,
1

I am new to ubuntu and NVIDIA graphic card so please help me out.
I was trying to download a software and needed to change permission from the root. However, when I access as root, one of my external monitor went off and I believe it is related to the graphics.
Under my settings >> about >> graphics, it is llvmpipe(LLVM 12.0.0,256 bits) instead of NVIDIA graphic card.

The following output might help to identify the problem:

$ nvidia-smi
NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

$ dkms status
nvidia, 510.73.05, 5.14.0-1045-oem, x86_64: installed

$grep nvidia /etc/modprobe.d/* /lib/modprobe.d/*
/etc/modprobe.d/blacklist-framebuffer.conf:blacklist nvidiafb
/etc/modprobe.d/blacklist-nouveau-nvidiafb.conf:blacklist nvidiafb
/lib/modprobe.d/nvidia-kms.conf:# This file was generated by nvidia-prime
/lib/modprobe.d/nvidia-kms.conf:options nvidia-drm modeset=1

2

Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post.

3

nvidia-bug-report.log.gz (135.2 KB)

like this? attach it directly?

4

Please disable secure boot in bios.

5

Oh my god thank you! could you please tell me where in the log file that indicate this is my problem?

6

The lspci -k output showed nvidia modules available but not loaded. The dmesg output said “Secure boot enabled”.

7

but now I am having a new problem. After doing so, I could not have the computer connected to the network. Is it related?

8

That would be very unlikely. Please create anew nvidia-bug-report.log in that state.

9

If I disabled the secure boot in bios, does it mean that I can no longer upgrade my graphic card driver? would that be a concern in the future?
If disabling the secure boot in bios is only a temporary solution, and the conflict between the graphic card version and the computer hard wares is the real problem. Would replacing the graphic card be a better option?

10

Secure boot does not have anything to do with driver updates etc. It’s a security feature that require boot loader, kernel and all drivers to be signed (per default with a Microsoft key).
The alternative to disabling it would be setting up module signing within Ubuntu. Either through update-secureboot-policy or by reinstalling and choosing the option “Install third party software”.