ubuntu18没有网络连接Network

https://blog.csdn.net/wzj_whut/article/details/86744485

https://blog.csdn.net/qwer790111/article/details/8614724

https://www.cnblogs.com/yuxc/archive/2012/07/29/2613974.html

sudo service NetworkManager stop

sudo rm /var/lib/NetworkManager/NetworkManager.state

sudo service NetworkManager start