【ubuntu】虚拟机连不上网，且网络中没有有线连接

错误图示

sudo gedit /etc/NetworkManager/NetworkManager.conf 
managed=true

sudo gedit /usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf 
添加except:type:ethernet,

然后重启

sudo service network-manager stop
sudo rm /var/lib/NetworkManager/NetworkManager.state
sudo service network-manager start

完成