1.安装nvidia驱动报错：
You appear to be running an X server; please exit X before installing. For further details
2.原因
主要是由于安装远程控制lightgm 导致X-server启动
3.修复
./NVIDIA-Linux-x86_64-440.82.run --kernel-source-path=/usr/src/kernels/4.4.242-1.el7.elrepo.x86_64 -k $(uname -r) -no-x-check
-no-x-check 表示安装驱动时不检测X服务，非必须
标签：appear,please,installing,server,exit,further,before From： https://www.cnblogs.com/Leonardo-li/p/16803163.html