ubuntu16.04 nividia-smi 出现“Make sure that the latest NVIDIA driver is installed and running.”

之前还可以用gpu跑程序，不知更新了啥导致服务器输入nvidia-smi之后显示如下信息：NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.之前还可以用gpu跑程序，不知更新了啥导致服务器输入nvidia-smi之后显示如下信息：NV