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我无法连接到 Wi-Fi

tag-icon • tag-icon 12.04 wireless internet
我无法连接到 Wi-Fi

我正在使用 ubuntu 12.04，在连接我家的 wifi 时遇到了一些问题。以下是简要概述：

  1. 我家的 wifi 可以用，因为我通过以太网上网
  2. 我的无线驱动程序可以正常工作，因为我可以成功连接到办公室的 wifi
  3. 我甚至无法 ping 通我的路由器！

所以，我不明白它不起作用的原因！我正在使用 ubuntu 12.04。以下是有关连接和类似信息：

alecive@calliope:~$ nm-tool 

NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            atl1c
  State:             unavailable
  Default:           no
  HW Address:        00:24:BE:EB:DA:87

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

  Wired Properties
    Carrier:         off


- Device: wlan0  [InfostradaWiFi-004309] ---------------------------------------
  Type:              802.11 WiFi
  Driver:            iwlwifi
  State:             connected
  Default:           yes
  HW Address:        00:27:10:2B:68:28

  Capabilities:
    Speed:           135 Mb/s

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

  Wireless Access Points (* = current AP)
    FASTWEB-1-00219631C110: Infra, 00:21:96:31:C1:18, Freq 2462 MHz, Rate 54 Mb/s, Strength 82 WPA
    Vodafone-23070663: Infra, 00:24:89:94:F6:AE, Freq 2437 MHz, Rate 54 Mb/s, Strength 50 WPA2
    belkin.0bc:      Infra, 08:86:3B:57:20:BC, Freq 2412 MHz, Rate 54 Mb/s, Strength 44 WPA WPA2
    Ivica:           Infra, 00:11:50:36:9C:EB, Freq 2412 MHz, Rate 54 Mb/s, Strength 27 WPA
    Paola WiFi:      Infra, F8:D1:11:62:8C:CF, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA WPA2
    FASTWEB-1-0021964482E4: Infra, 00:21:96:44:82:EC, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA
    ciao wireless:   Infra, 00:25:9C:88:68:56, Freq 2462 MHz, Rate 54 Mb/s, Strength 27 WEP
    TISCALI:         Infra, 00:24:17:D9:2A:B7, Freq 2462 MHz, Rate 54 Mb/s, Strength 27
    *InfostradaWiFi-004309: Infra, AC:E2:15:4A:35:74, Freq 2427 MHz, Rate 54 Mb/s, Strength 90 WPA
    LEPRE35:         Infra, 58:98:35:7E:D6:9B, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2
    TP-LINK:         Infra, 00:14:78:EC:40:AA, Freq 2437 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2
    Alice-92034414:  Infra, 00:19:3E:15:82:B0, Freq 2437 MHz, Rate 54 Mb/s, Strength 22 WPA
    MAMADOU:         Infra, F0:7D:68:11:3F:E7, Freq 2437 MHz, Rate 11 Mb/s, Strength 24 WPA WPA2
    M&A:             Infra, 00:17:F2:E4:83:67, Freq 2412 MHz, Rate 54 Mb/s, Strength 29 WEP
    Vodafone-26148616: Infra, 00:24:89:82:19:EE, Freq 2412 MHz, Rate 54 Mb/s, Strength 22 WPA2
    FASTWEB-1-001CA2AE2E70: Infra, 00:1C:A2:AE:2E:70, Freq 2437 MHz, Rate 54 Mb/s, Strength 20 WPA

  IPv4 Settings:
    Address:         192.168.1.8
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.1.1

    DNS:             8.8.8.8
    DNS:             8.8.4.4


alecive@calliope:~$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
    link/ether 00:24:be:eb:da:87 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:27:10:2b:68:28 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.8/24 brd 192.168.1.255 scope global wlan0
    inet6 fe80::227:10ff:fe2b:6828/64 scope link 
       valid_lft forever preferred_lft forever
alecive@calliope:~$ ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
^C
--- 192.168.1.1 ping statistics ---
13 packets transmitted, 0 received, 100% packet loss, time 12094ms

alecive@calliope:~$

有人能帮帮我吗？谢谢！

答案1

需要检查或记住的几件事 1. 检查是否有其他无线设备可以连接并上网。以太网是有线的，路由器可以使用以太网正常工作，而无线部分则已损坏。 2. 检查您的防火墙，因为防火墙可能会阻止对无线连接的访问​​。看来您的计算机工作正常，您只是被阻止了。您也可以尝试“dhclient wlan0”，它应该会重置您的 IP 并可能解决问题。

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