1、sudo service network-manager stop
2、sudo rm /var/lib/NetworkManager/NetworkManager.state
3、sudo service network-manager start
4、sudo gedit /etc/NetworkManager/NetworkManager.conf(把managed=false改成managed=true)
5、sudo service network-manager restart
Ubantu wired connection disappears
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Origin blog.csdn.net/qq_43374605/article/details/105601068
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