以太网连接不工作,但无线适配器可以

以太网连接不工作,但无线适配器可以

我是 Linux 新手,我希望你能帮助我,我正在使用一台几年前建造的具有双启动(Windows 7 / Ubuntu 14.04)的计算机,我的互联网连接使用以太网电缆在 Windows 7 上运行良好,但在 Ubuntu 中不起作用,相反,我正在使用一个运行非常慢的 TL-WN7200ND USB 适配器。

我在这里发布一些信息:

主板:技嘉 970A-UD3P

Ubuntu 启动时显示消息:“等待网络配置”

一些命令的输出:

    ~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr fc:aa:14:e5:93:c2  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:44 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:420 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:5179 (5.1 KB)  TX bytes:2955 (2.9 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:65536  Metric:1
          RX packets:1131 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1131 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:133304 (133.3 KB)  TX bytes:133304 (133.3 KB)

wlan0     Link encap:Ethernet  HWaddr 90:f6:52:0c:4d:d2  
          inet addr:192.168.15.206  Bcast:192.168.15.255  Mask:255.255.255.0
          inet6 addr: fe80::92f6:52ff:fe0c:4dd2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:94866 errors:0 dropped:0 overruns:0 frame:0
          TX packets:66743 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:91597403 (91.5 MB)  TX bytes:11078624 (11.0 MB)


    ~$ sudo lshw -class network
  *-network DISABLED      
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 0c
       serial: fc:aa:14:e5:93:c2
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:73 ioport:d000(size=256) memory:fe100000-fe100fff memory:d2100000-d2103fff
  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@8:1.4
       logical name: wlan0
       serial: 90:f6:52:0c:4d:d2
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rt2800usb driverversion=3.16.0-44-generic firmware=0.29 ip=192.168.15.206 link=yes multicast=yes wireless=IEEE 802.11bgn



~$ iwconfig
eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"AXTEL-5879"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: E0:1D:3B:46:7B:C8   
          Bit Rate=58.5 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=31/70  Signal level=-79 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:3  Invalid misc:53   Missed beacon:0

lo        no wireless extensions.

    ~$sudo nano /etc/network/interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp


~$ cat /var/lib/NetworkManager/NetworkManager.state
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true


~$ cat /etc/NetworkManager/NetworkManager.conf
 [main]
 plugins=ifupdown,keyfile,ofono
 dns=dnsmasq

[ifupdown]
managed=false

希望您能帮助我,我真的想开始使用 Ubuntu。谢谢!

答案1

Windows 可以在关机时禁用以太网适配器,如本问答中所述:(Ubuntu(双启动 Windows)以太网未连接/检测)。如果是这种情况,则(在 Windows XP 下)请按照下列步骤操作:

Right click my computer and choose "Properties"
--> "Hardware" tab   --> Device Manager
 --> Network Adapters
  --> "double click" Realtek ...
   --> Advanced tab
    --> Wake-On-Lan After Shutdown
     --> Enable

抱歉,我手边没有 Windows 7,无法列出其详细步骤,但您应该能够通过上面列出的步骤和一点谷歌搜索(如果有必要)来弄清楚。

答案2

您的无线连接似乎正在使用中。通常,您必须禁用一个网络才能启用另一个网络。

您是否尝试过不使用 wifi 设备进行连接?您发布的结果似乎表明您当前已使用无线网络连接到网络,而以太网连接已被禁用。

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