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Ubuntu 16.04 中无法访问以太网（有线连接）

tag-icon • tag-icon networking 16.04 network-manager internet ethernet
Ubuntu 16.04 中无法访问以太网（有线连接）

我有一个双启动系统，其中 Windows 10 和 Ubuntu 16.04。Windows 10 可以访问互联网，但 Ubuntu 16.04 不能。我已检查 Windows 10 中未在以太网上启用 WOL。您可以看到 Ubuntu 16.04 中的以太网状态 (eno1) 已启动。

以下是一些结果

$ ping 8.8.8.8
connect: Network is unreachable

从上面可以看出这不是域服务器的问题（事实上，在此之前我曾尝试更改/etc/resolv.conf为包含行nameserver 8.8.8.8，但没有成功，后来我发现这不是域服务器的问题）

$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 18:31:bf:ce:35:39 brd ff:ff:ff:ff:ff:ff 3: enp14s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether 18:31:bf:ce:35:3a brd ff:ff:ff:ff:ff:ff 5: br-e5e68b901b8d: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default 
    link/ether 02:42:bc:39:1c:1b brd ff:ff:ff:ff:ff:ff 6: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default 
    link/ether 02:42:90:09:22:e9 brd ff:ff:ff:ff:ff:ff

$ ifconfig -a
br-e5e68b901b8d Link encap:Ethernet  HWaddr 02:42:bc:39:1c:1c  
          inet addr:172.18.0.1  Bcast:172.18.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

docker0   Link encap:Ethernet  HWaddr 02:42:90:09:22:ec  
          inet addr:172.17.0.1  Bcast:172.17.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eno1      Link encap:Ethernet  HWaddr 18:31:bf:ce:35:3c  
          inet6 addr: fe80::fd89:7b2:8432:3e66/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:302 errors:0 dropped:0 overruns:0 frame:0
          TX packets:96 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:50635 (50.6 KB)  TX bytes:10704 (10.7 KB)
          Interrupt:20 Memory:fb600000-fb620000 

enp14s0   Link encap:Ethernet  HWaddr 18:31:bf:ce:35:3c  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Memory:fb300000-fb37ffff 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:37180 errors:0 dropped:0 overruns:0 frame:0
          TX packets:37180 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:14199410 (14.1 MB)  TX bytes:14199410 (14.1 MB)

欢迎任何评论，并非常感谢！

答案1

我通过这种方法解决：假设接口名为eno1（从命令中找到ifconfig）

- sudo service network-manager stop
- sudo ifconfig eno1 up
- sudo dhclient eno1
- sudo service network-manager start

从：https://askubuntu.com/a/1010564/78528

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