Running "nvidia-smi" command and returned "no devices were found" after installed nvidia-driver in Ubuntu 22.04

running “nvidia-smi” command and returned “no devices were found” after installed nvidia-driver in Ubuntu 22.04 (kernel version 5.19)

I have 2 nvidia GeForce RTX 2080 SUPER cards.

I have tried three methods to install the nvidia-driver:

  1. from the “software & updates” → additional drivers → choose the proper driver to install
  2. download and execute the proper nvidia driver (550 version)file from nvidia’s official website.
  3. run “ubuntu-drivers devices” commandto search proper gpu drivers and run “apt install ” ( 545, 535, 525) command to install.

After these trial, running “nvidia-smi” command and it still returns “no devices were found”.

nvidia-bug-report.log.gz (390.3 KB)

[ 7.198225] NVRM: GPU 0000:82:00.0: GPU does not have the necessary power cables connected.

Thanks. I checked the power cable connection and there are 6-pins
and 8-pins, I only connected the 8-pins power cable before. Now both 6-pins and 8-pins are connected and it works.