过程：i7笔记本一台, 960m和intel双显卡（痛苦之源）
流程参考https://blog.csdn.net/botao_li/article/details/80745535
双显卡装linux毛病多，几个要避开的坑：
1. 不要直接下各种官网地方推荐你的390稳定版，加ppa那个方法也不对。CUDA9.2需要396版，对就是那个short lived branch 396版本。
驱动下载地址：https://www.nvidia.cn/object/unix-cn.html
2. 安装驱动前要关gdm进控制台（$ service gdm stop)，装驱动要加参数 --no-opengl-files, 忘了加会进入login死循环，解决办法，1804进wayLand模式，或者另一台机器ssh上来（小心！Ubuntu1804默认没有开SSH），卸载驱动，重新装。
3. 后面就是装CUDA，cuDNN，没什么特别的。
4. 我是Anaconda 方式装的Tensorflow
conda install tensorflow-gpu
之后，就可以愉快的使用了。
Detected 1 CUDA Capable device(s)
Device 0: "GeForce GTX 760M"
CUDA Driver Version / Runtime Version 9.2 / 9.2
CUDA Capability Major/Minor version number: 3.0
Total amount of global memory: 2002 MBytes (2099511296 bytes)
( 4) Multiprocessors, (192) CUDA Cores/MP: 768 CUDA Cores
GPU Max Clock rate: 719 MHz (0.72 GHz)
Memory Clock rate: 2004 Mhz
Memory Bus Width: 128-bit
L2 Cache Size: 262144 bytes
Maximum Texture Dimension Size (x,y,z) 1D=(65536), 2D=(65536, 65536), 3D=(4096, 4096, 4096)
Maximum Layered 1D Texture Size, (num) layers 1D=(16384), 2048 layers
Maximum Layered 2D Texture Size, (num) layers 2D=(16384, 16384), 2048 layers
Total amount of constant memory: 65536 bytes
Total amount of shared memory per block: 49152 bytes
Total number of registers available per block: 65536
Warp size: 32
Maximum number of threads per multiprocessor: 2048
Maximum number of threads per block: 1024
Max dimension size of a thread block (x,y,z): (1024, 1024, 64)
Max dimension size of a grid size (x,y,z): (2147483647, 65535, 65535)
Maximum memory pitch: 2147483647 bytes
Texture alignment: 512 bytes
Concurrent copy and kernel execution: Yes with 1 copy engine(s)
Run time limit on kernels: Yes
Integrated GPU sharing Host Memory: No
Support host page-locked memory mapping: Yes
Alignment requirement for Surfaces: Yes
Device has ECC support: Disabled
Device supports Unified Addressing (UVA): Yes
Device supports Compute Preemption: No
Supports Cooperative Kernel Launch: No
Supports MultiDevice Co-op Kernel Launch: No
Device PCI Domain ID / Bus ID / location ID: 0 / 1 / 0