Sometimes nvidia-smi doesn’t work and after reboot it shows the error:
NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.
Even if I reinstall the driver it doesn’t work, please find the nvidia-bug-report.log (1.2 MB) and let me know the steps to proceed.
But sometimes after rebooting several times and doing nvidia-smi after few minutes it starts working again, this is something weird.