NVIDIA-SMI has failed because it couldn‘t communicate with the NVIDIA driver
安装了cuda驱动的Ubuntu机器重启后，执行nvdia-smi命令提示
NVIDIA-SMI has failed because it couldn‘t communicate with the NVIDIA driver, Make sure that the latest NVIDIA driver is installed and running.
网上搜索一阵，发现只要执行如下几句就可以恢复正常
sudo apt-get install dkms sudo dkms install -m nvidia -v 410.79（410.79表示的是驱动版本号）
利用命令 ll /usr/src/ 可查看下面有一个nvidia-410.79文件夹，版本号安装的nvidia驱动而异,比如 nvidia-470.82.00
发生这样问题的本质是Linux核心被更新了，禁止更新核心就好。
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