解决与nvidia驱动通讯失败的问题

问题：

$ 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.

解决方案：

1. 记录版本，如我这边是430.64；

ls /usr/src | grep nvidia
nvidia-430.64

2. 安装dkms；

sudo apt install dkms

3. 重新安装驱动，版本号改成自己的。

sudo dkms install -m nvidia -v 430.64