1.先停止network網卡服務
service network-manager stop
2.删除舊的狀态資訊
rm /var/lib/NetworkManager/NetworkManager.state
3.啟動network網卡服務
4.修改配置檔案
vim /etc/NetworkManager/NetworkManager.conf //把manager=true
5.重新開機network網卡服務
sudo service network-manager restart