- 卸载的方法: 显示已经装的包,-l | grep nvidia``` 1 关闭Xorg的显示: 
sudo service lightdm stop sudo init 3 sudo killall xorg 1
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sudo apt-get –purge remove cuda sudo apt-get purge nvidia- sudo apt-get purge cuda sudo apt-get purge libcudnn7 sudo apt-get purge libcudnn7-dev 1
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2. 安装nvidia的驱动
+ 网址<http://www.nvidia.com/Download/index.aspx>
+ 需要安装ver=390.48的驱动,可以降级为ver=390.25的驱动
+ 安装驱动前需要卸载旧的驱动,```sudo apt-get remove –purge nvidia*
- 添加驱动源,并更新 - 1 
 2- sudo add-apt-repository ppa:graphics-drivers/ppa 
 sudo apt-get update
- 查看电脑支持的驱动的版本, - apt-cache search nvidia*``` - 1 - + 安装更新,```sudo apt-get install nvidia-390 
- 检验是否安装成功, - /proc/driver/nvidia/version``` - 1 
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 3. 安装cuda toolkit 9.0
 + 卸载旧的系统 ```sudo ./uninstall_cuda_*.pl
- 下载源文件, - 1 - + 安装方式: 
sudo dpkg -i cuda-repo-ubuntu1604_9.0.176-1_amd64.deb sudo dpkg -i libcudnn7_7.0.5.15-1+cuda9.0_amd64.deb sudo dpkg -i libcudnn7-dev_7.0.5.15-1+cuda9.0_amd64.deb sudo dpkg -i libnccl2_2.1.4-1+cuda9.0_amd64.deb sudo dpkg -i libnccl-dev_2.1.4-1+cuda9.0_amd64.deb sudo apt-get update sudo apt-get install cuda=9.0.176-1 sudo apt-get install libcudnn7-dev sudo apt-get install libnccl-dev 1
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4. 安装cudnn lib
安装方式:先下载,
sudo dpkg -i libcudnn7_7.0.5.15-1+cuda9.0_amd64.deb sudo dpkg -i libcudnn7-dev_7.0.5.15-1+cuda9.0_amd64.deb sudo dpkg -i libnccl2_2.1.4-1+cuda9.0_amd64.deb sudo dpkg -i libnccl-dev_2.1.4-1+cuda9.0_amd64.deb sudo apt-get update sudo apt-get install libcudnn7-dev sudo apt-get install libnccl-dev ```