if Cuda and Nvidia drivers mismatch, the nvidia-smi command mismatches with Nvidia NVML Driver/library version mismatch, and needs to check the version of the Nvidia Driver to see if it matches.

enter the command as follows:

ubuntu-drivers devices

will show:

driver: nvidia-driver-418-server-distro non-free

driver: nvidia-driver-440-server-distro non-free:

driver: nvidia-driver-435-distro non-free

driver: nvidia-driver-440-distro non-free

Distro free builtin

driver: xserver-xorg-video-nouveau-distro free builtin

directly install all, command as follows:

sudo ubuntu-drivers autoinstall

then reboot

sudo reboot

use nvidia-smi command, found that you can see the graphics card information, and CUDA model 10.2, Driver version 440, successful match.

Tue Aug 4 21:05:21 2020

+—————————————————————————–+

Driver Version: 440.95.01 CUDA Version: 10.2 |

|——————————-+———————-+———————-+

| GPU Name Persistence-M| bb-id disp.a | Volatile uncorr.ecc |

| Fan Temp Perf Pwr:Usage/Cap| memory-usage | gpu-util Compute m. |

|===============================+======================+======================|

| 0 GeForce RTX 208… Off | 00000000:7 p.m. Off | 0 N/A |

23 c | 41% P8 2 12 mib/11019 w/260 w | mib | 0% Default |

+——————————-+———————-+———————-+