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有线连接到 LAN，但没有互联网

tag-icon • tag-icon 12.04 networking internet wired
有线连接到 LAN，但没有互联网

在我的大学里，我们有一个 LAN 网络，通过它可以访问互联网和 DC++。这需要注册一个 mac 地址，我已经注册了。

最初网络用于连接局域网（显示有线网络已连接），但无法访问互联网。我重启了机器并插入网线。这导致显示错误Device not configured。我通过在线阅读问题解决了这个问题。

现在我的机器连接到局域网，但没有互联网接入。Windows 上的网络运行正常。

ifconfig -a
eth0      Link encap:Ethernet  HWaddr b8:ca:3a:d7:67:f5  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:2818 errors:0 dropped:0 overruns:0 frame:0
          TX packets:197 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:210007 (210.0 KB)  TX bytes:11502 (11.5 KB)

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:1076 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1076 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:105216 (105.2 KB)  TX bytes:105216 (105.2 KB)

wlan0     Link encap:Ethernet  HWaddr 60:6c:66:86:81:c0  
          inet addr:192.168.150.107  Bcast:192.168.150.255  Mask:255.255.255.0
          inet6 addr: fe80::626c:66ff:fe86:81c0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:18694 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12035 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:22755906 (22.7 MB)  TX bytes:1269060 (1.2 MB)



 NetworkManager Tool

State: connected (global)

- Device: wlan0  [NTCC] --------------------------------------------------------
  Type:              802.11 WiFi
  Driver:            iwlwifi
  State:             connected
  Default:           yes
  HW Address:        60:6C:66:86:81:C0

  Capabilities:
    Speed:           72 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    Pln_Omini_1:     Infra, D4:CA:6D:9D:21:09, Freq 2447 MHz, Rate 54 Mb/s, Strength 25
    *NTCC:           Infra, FE:85:DE:78:5C:91, Freq 2462 MHz, Rate 54 Mb/s, Strength 80 WPA2
    Connectify-me:   Infra, 18:3D:A2:4A:BF:3D, Freq 2462 MHz, Rate 54 Mb/s, Strength 92 WPA2
    IRL-BITS:        Infra, 84:1B:5E:3A:33:86, Freq 2462 MHz, Rate 54 Mb/s, Strength 19 WPA2
    AndroidAP:       Infra, 20:02:AF:3B:91:84, Freq 2437 MHz, Rate 54 Mb/s, Strength 89 WPA2
    plasmodium:      Infra, C0:3F:0E:EB:87:48, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA2

  IPv4 Settings:
    Address:         192.168.150.107
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.150.1

    DNS:             192.168.150.1


- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        B8:CA:3A:D7:67:F5

  Capabilities:
    Carrier Detect:  yes
    Speed:           100 Mb/s

  Wired Properties
    Carrier:         off

答案1

您似乎已通过无线方式连接，但使用了棘手的驱动程序 iwlwifi。请打开终端并执行以下操作：

sudo -i
echo "options iwlwifi 11n_disable=1" >> /etc/modprobe.d/iwlwifi.conf
exit

重新启动并让我们听取您的报告。

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