遇到这个错误，也让人很无奈，还好，吾终于找到了解决办法：
sudo apt-get install nvidia-settings
之后又出现下面的错误，不知何意：
** (nvidia-settings:3684): WARNING **: PRIME: 执行子进程“/usr/bin/prime-supported”失败(没有那个文件或目录)** Message: PRIME: is it supported? noERROR: nvidia-settings could not find the registry key file.This file should have been installed along with thisdriver at/usr/share/nvidia/nvidia-application-profiles-key-documentation. The application profiles will continue towork, but values cannot be prepopulated or validated,and will not be listed in the help text. Please seethe README for possible values and descriptions.
