ubuntu 20.04 可以上网，但是右上角网络图标显示问号

[minotaurking]

Ubuntu 20.04网络是通的，所有上网功能都正常，但是网络图标上却是一个问号，就和无法访问互联网时一样。系统是如何判断更新这个图标的？

[funicorn]

代码： 全选

nmcli -p n c check

connectivity [check]
Get network connectivity state. The optional check argument tells
NetworkManager to re-check the connectivity, else the most recent known
connectivity state is displayed without re-checking.

Possible states are:

none
the host is not connected to any network.

portal
the host is behind a captive portal and cannot reach the full Internet.

limited
the host is connected to a network, but it has no access to the
Internet.

full
the host is connected to a network and has full access to the Internet.

unknown
the connectivity status cannot be found out.

[minotaurking]

以上命令返回limited，但其实是可以上网的。

[funicorn]

代码： 全选

nmcli -p c show
nmcli -p d show

安装运行虚拟机了，开代理或vpn了？

[minotaurking]

应该是自己犯傻了，dns设置的有问题，导致少量网站域名解析不了，可能ubuntu的网站也解析不了，所以图标显示无法访问互联网。调整dns设置后就好了。谢谢@funicorn

[九天星]

跟windows网络图标中的问号是一个道理。