# The solution for the Ubuntu virtual machine cannot connect to the network and the network icon in the upper right corner is missing


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## 排查网卡问题

```bash
ip a
```

![image-20221018182844392](/images/2022-10-15-Ubuntu虚拟机连接不上网络，右上角网络图标不见的解决办法/1)

只有一个127.0.0.1的网卡

## 解决办法

1、删除 **NetworkManager** 缓存文件

```bash
service NetworkManager stop
rm /var/lib/NetworkManager/NetworkManager.state
service NetworkManager start
```

2、修改`/etc/NetworkManager/NetworkManager.conf`

```bash
managed=true 
```

3、重启 **NetworkManager**

```bash
service NetworkManager restart
```