NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

 

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.

安装好驱动后，apt-get upgrade执行了一下。结果重启驱动就不行了。

以为驱动坏了，卸载重装也不顶事。最后找来找去这样搞好了。

 

sudo apt install nvidia-cuda-toolkit

 

搞环境很琐碎，是以为记。

 

重装的步骤

 

1.卸载nvidia驱动
卸载NV驱动和安装一样，首先ctrl+Alt+F2(ubuntu18.04 F6)进入命令行状态，然后停止lightdm
sudo service lightdm stop
或者
sudo /etc/init.d/lightdm stop

有的机器服务是这个，gdm或gdm3

则需要 

sudo /etc/init.d/gdm stop

sudo /etc/init.d/gdm3 stop

卸载命令位置/usr/bin/nvidia-uninstall，以下命令即可卸载。
sudo /usr/bin/nvidia-uninstall
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然后重装：

sudo ./cuda_10.0.130_410.48_linux.run

 

选 driver 和 nvidia X 这两个。其他不选。

就安装好了。