有线连接无法正常工作 Ubuntu 12.04

有线连接无法正常工作 Ubuntu 12.04

到目前为止,我的连接都很好,但我的有线连接在 Ubuntu 12.04 中不起作用。我已经在 Windows 7 分区旁边安装了 Ubuntu 12.04,连接在 Windows 上有效,但在 Ubuntu 12.04 上无效。我的无线连接也没有问题。问题特定于 Ubuntu 12.04 上的有线连接。我在下面提供了一些详细信息。

ifconfig

eth0      Link encap:Ethernet  HWaddr 00:1e:ec:8d:f0:03  
          inet6 addr: fe80::21e:ecff:fe8d:f003/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1 errors:0 dropped:0 overruns:0 frame:0
          TX packets:376 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:316 (316.0 B)  TX bytes:33769 (33.7 KB)
          Interrupt:19 

eth2      Link encap:Ethernet  HWaddr 00:21:00:4e:ac:58  
          inet6 addr: fe80::221:ff:fe4e:ac58/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:1660 errors:0 dropped:0 overruns:0 frame:28
          TX packets:1846 errors:61 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1372676 (1.3 MB)  TX bytes:254576 (254.5 KB)
          Interrupt:18 

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:16436  Metric:1
          RX packets:1862 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1862 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:155767 (155.7 KB)  TX bytes:155767 (155.7 KB)

sudo lshw -C network 

 *-network               
       description: Wireless interface
       product: BCM4312 802.11b/g LP-PHY
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth2
       version: 01
       serial: 00:21:00:4e:ac:58
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=5.100.82.38 ip=10.0.0.3 latency=0 multicast=yes wireless=IEEE 802.11bg
       resources: irq:18 memory:99700000-99703fff


 *-network
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: eth0
       version: 02
       serial: 00:1e:ec:8d:f0:03
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=N/A latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:19 ioport:3000(size=256) memory:93410000-93410fff memory:93400000-9340ffff memory:93420000-9343ffff

答案1

升级到 12.04 后我遇到了同样的问题。

以下解决方案对我有用:

  1. 以 root 身份在文本编辑器中打开此文件:

    gksu gedit /etc/network/interfaces
    
  2. 将以下行添加到文件:

    auto eth0
    iface eth0 inet dhcp
    
  3. 保存文件并退出文本编辑器。

  4. 现在重启网络:

答案2

我所要做的就是从端口拔下以太网电缆,然后再插上。它成功了。太荒谬了。

答案3

尝试启用/禁用连接,并删除当前活动的连接并在下次添加!

答案4

尝试

sudo service network-manager restart

然后重置IP

sudo /etc/init.d/networking restart

之后检查

ifconfig

看看会发生什么变化。

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