重启服务器后使用nvidia-smi显示NVIDIA-SMI has failed because it couldn‘t communicate with the NVIDIA driver

nvidia 卡的可用驱动程序：sudo ubuntu-drivers devices（安装出错的话）

apt install --only-upgrade ubuntu-drivers-common 

安装推荐（recommended）的驱动程序：sudo ubuntu-drivers autoinstall

重启：sudo reboot

关闭驱动自动更新

修改配置文件/etc/apt/apt.conf.d/10periodic  #０是关闭，1是开启，将所有值改为0

sudo apt-mark hold linux-image-generic linux-headers-generic 

参考文献：

1. 重启服务器后使用nvidia-smi显示NVIDIA-SMI has failed because it couldn‘t communicate with the NVIDIA driver._error! could not locate dkms.conf file.-优快云博客
2. ubuntu-drivers "UnboundLocalError: local variable 'version' referenced before assignment" when installing nvidia drivers - Ask Ubuntu
3. ubuntu18.04 配置禁止升级并安装NVIDIA显卡驱动 - 河在谈 - 博客园 (cnblogs.com)