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局域网不工作

tag-icon • tag-icon networking internet lan wired
局域网不工作

我即将使用 Wimax 调制解调器并通过以太网电缆获得互联网连接，但是当 ISP 安装程序（他来到我们家，对 Linux 不太熟悉）即将进行配置时，他无法做到这一点。

所以我尝试了这些东西：

1）

输入：

ethtool eth0

输出：

    Supported ports: [ TP ]
    Supported link modes:   10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes:  Not reported
    Advertised pause frame use: No
    Advertised auto-negotiation: Yes
    Speed: Unknown!
    Duplex: Unknown! (255)
    Port: Twisted Pair
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    MDI-X: Unknown
Cannot get wake-on-lan settings: Operation not permitted
    Current message level: 0x0000003f (63)
                   drv probe link timer ifdown ifup
    Link detected: no

2）

输入：

ethtool ethX

输出：

Cannot get device settings: No such device
Cannot get wake-on-lan settings: No such device
Cannot get message level: No such device
Cannot get link status: No such device
No data available

3）

输入：

sudo rfkill list all

输出：

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: yes
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: brcmwl-0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes

4）

输入：

ifconfig -a

输出：

eth0      Link encap:Ethernet  HWaddr b8:88:e3:88:62:3b  
          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)

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:1283 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1283 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:183079 (183.0 KB)  TX bytes:183079 (183.0 KB)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:10.13.147.136  P-t-P:10.64.64.64  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:6478 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7867 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:2817719 (2.8 MB)  TX bytes:967126 (967.1 KB)

wlan0     Link encap:Ethernet  HWaddr 08:3e:8e:16:60:2b  
          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)
          Interrupt:17

我现在如何启用局域网并获得互联网连接？我正在使用联想 G470。它显然已经坏了，从那时起我就无法使用 wifi，所以我现在正在尝试使用有线电缆。这已经是一个需要通过技术手段解决的硬件问题了吗？

答案1

使用 打开终端CtrlAltT。

首先使用（）备份此文件sudo cp /etc/network/interfaces /etc/network/interfaces.old，然后编辑它：

sudo nano /etc/network/interfaces

将以下内容粘贴到文件中，删除其他所有内容

# The loopback network interface

auto lo
iface lo inet loopback

保存并退出文件，然后尝试以下命令。

sudo rfkill list all
sudo rfkill unblock all
sudo /etc/init.d/networking restart
sudo ip link set dev eth0 down
sudo stop network-manager
sudo start network-manager

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