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

Problem: Ubuntu 18.04 installs the graphics card driver normally. When the Ubuntu system is opened, the graphics card driver cannot be used. Use NVIDIA SMI to check the above errors.


Just execute two commands:

Sudo apt get install DKMS
sudo DKMS install – M NVIDIA – V 440.44 (440.44 indicates the driver version number)

Use the command ll/usr/SRC/to view the nvidia-440.44/ folder below. The version number varies from computer to computer

Then restart the computer, success.

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