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

问题描述，ubuntu18.04上在 软件更新 功能中安装显卡驱动后，使用nvidia-smi指令，不能正常显示显卡信息，出现如下报错信息：
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running

在网上找到两种解决办法。

方法一：

cd /usr/src 进入目录后查看驱动版本号，比如（430.xx）
sudo apt install dkms
sudo dkms install -m nvidia -v 430.xx
重新输入nvidia-smi查看是否正常

方法二：

内核降级

参考：
https://blog.csdn.net/zhe_csdn/article/details/96431265
https://blog.csdn.net/qq_41870658/article/details/93330041