1.首先要进入tty 模式：

先ctrl alt f2看看能进tty不 (非笔记本电脑)

笔记本电脑 ctrl alt fn f2

2. 先联网：

连接有线网络 

sudo dhclient eth0

如果报错 Cannot find device "eth0"

接下来执行 dmesg | grep eth

 

[    1.915263] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) b8:85:84:9b:c5:e7

[    1.915265] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection

[    1.915509] e1000e 0000:00:1f.6 eth0: MAC: 13, PHY: 12, PBA No: FFFFFF-0FF

[    1.916461] e1000e 0000:00:1f.6 eno1: renamed from eth0

[    9.225997] wmi_bus wmi_bus-PNP0C14:04: WQBC data block query control method not found

发现被rename了 再执行 。sudo dhclient eno1 

执行ifconfig 就发现成功了

3.执行下面命令

然后依次执行apt update,

apt --fix-broken install,

apt upgrade