Problema de conexão com fio Ubuntu 14.04 LTS

Question

Recentemente adicionei uma partição ao meu computador com o Ubuntu 14.04 LTS de 64 bits.

É a inicialização dupla do Turbo-X com o Windows 7. A Ethernet funciona bem no Windows, mas O Ubuntu não funciona.

A conexão com fio está tentando se conectar ao switch o tempo todo, mas não conecta.

george@myia:~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:90:f5:8c:2e:04
          inet6 addr: fe80::290:f5ff:fe8c:2e04/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:72 errors:0 dropped:0 overruns:0 frame:0
          TX packets:310 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4920 (4.9 KB)  TX bytes:56934 (56.9 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:410 errors:0 dropped:0 overruns:0 frame:0
          TX packets:410 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:33513 (33.5 KB)  TX bytes:33513 (33.5 KB)

wlan0     Link encap:Ethernet  HWaddr 00:1d:e0:84:b6:39  
          inet addr:192.168.0.102  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::21d:e0ff:fe84:b639/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:254 errors:0 dropped:0 overruns:0 frame:0
          TX packets:318 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:45164 (45.1 KB)  TX bytes:38175 (38.1 KB)

george@myia:~$ nm-tool

NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             disconnected
  Default:           no
  HW Address:        00:90:F5:8C:2E:04

  Capabilities:
    Carrier Detect:  yes
    Speed:           1000 Mb/s

  Wired Properties
    Carrier:         on


- Device: wlan0  [MF60_B6EF5F] -------------------------------------------------
  Type:              802.11 WiFi
  Driver:            iwl4965
  State:             connected
  Default:           yes
  HW Address:        00:1D:E0:84:B6:39

  Capabilities:
    Speed:           54 Mb/s

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

  Wireless Access Points (* = current AP)
    *MF60_B6EF5F:    Infra, 78:E8:B6:B6:EF:5F, Freq 2437 MHz, Rate 54 Mb/s, Strength 79 WPA

  IPv4 Settings:
    Address:         192.168.0.102
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.0.1

    DNS:             192.168.0.1

george@myia:~$ lspci -nn | grep Ethernet
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 02)

    

Answer 1

sudo dhclient -r e sudo dhclient eth0

    

Answer 2

Eu tive este mesmo problema.
Entrou na minha bios e ligou a opção IOMMU para minha placa-mãe.
Depois disso, o Ubuntu viu a ethernet e funcionou corretamente.