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Thread: can't connect to internet via ethernet or wireless

  1. #1
    Join Date
    Jul 2009
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    3

    can't connect to internet via ethernet or wireless

    Hi, I'm running Ubuntu off a live CD and wanted to make sure I could connect to the internet before I installed it, but I can't connect via either wireless or wired connection, I was hoping someone could help me:
    I plug in the ethernet cord and the green and orange indicator lights light up normally. Then I do System --> Administration --> Networking and deactivate all other connections except eth0, which I activate. I don't get any error messages through any of this. But then when I open Firefox, I still can't connect to any websites.

    Thanks for your help!!
    ~astroshaw

  2. #2
    Join Date
    May 2009
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    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: can't connect to internet via ethernet or wireless

    plug in the ethernet cable and boot the cd. then post the output of
    Code:
    ifconfig
    tracepath www.google.com
    MyBlog
    Sledgehammer engineering, if it doesn't work, hit it damn hard.

  3. #3
    Join Date
    Jul 2009
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    Re: can't connect to internet via ethernet or wireless

    Hi Boondoklife,

    Here's the output:

    ubuntu@ubuntu:~$ ifconfig
    ath0 Link encap:Ethernet HWaddr 00:14:A4:08:31:6A
    inet6 addr: fe80::214:a4ff:fe08:316a/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:2825 dropped:0 overruns:0 frame:2825
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:200
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
    Interrupt:11 Memory:e0be0000-e0bf0000

    eth1 Link encap:Ethernet HWaddr 00:20:E0:89:F6:7B
    inet6 addr: fe80::220:e0ff:fe89:f67b/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:0 (0.0 b) TX bytes:2772 (2.7 KiB)
    Interrupt:11 Memory:f8000000-f8000fff

    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:53 errors:0 dropped:0 overruns:0 frame:0
    TX packets:53 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:3824 (3.7 KiB) TX bytes:3824 (3.7 KiB)

    ubuntu@ubuntu:~$ tracepath www.google.com
    gethostbyname2: Host name lookup failure
    ubuntu@ubuntu:~$

    Thanks!
    -astroshaw

  4. #4
    Join Date
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    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: can't connect to internet via ethernet or wireless

    Hmm well that is odd that there is not an eth0, how many network cards do you have in the system
    Post the output of
    Code:
    sudo lshw -class Network
    MyBlog
    Sledgehammer engineering, if it doesn't work, hit it damn hard.

  5. #5
    Join Date
    Jan 2007
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    5,549

    Re: can't connect to internet via ethernet or wireless

    post output of sudo dhclient eth1 when connected via wired

  6. #6
    Join Date
    Jul 2009
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    3

    Re: can't connect to internet via ethernet or wireless

    Hi boondoklife,

    I got the output:

    ubuntu@ubuntu:~$ sudo lshw -class Network
    *-network:0
    description: Wireless interface
    product: Prism 2.5 Wavelan chipset
    vendor: Intersil Corporation
    physical id: 7
    bus info: pci@02:07.0
    logical name: eth1
    version: 01
    serial: 00:20:e0:89:f6:7b
    width: 32 bits
    clock: 33MHz
    capabilities: bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=orinoco driverversion=0.15rc3 firmware=Intersil 1.3.3 link=yes multicast=yes wireless=IEEE 802.11b
    resources: iomemory:f8000000-f8000fff irq:11
    *-network:1 DISABLED
    description: Ethernet interface
    product: 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller
    vendor: Intel Corporation
    physical id: 8
    bus info: pci@02:08.0
    logical name: eth0
    version: 42
    serial: 00:0a:e4:41:bc:31
    size: 10MB/s
    capacity: 100MB/s
    width: 32 bits
    clock: 33MHz
    capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegociation
    configuration: autonegociation=off broadcast=yes driver=e100 driverversion=3.4.14-k4-NAPI duplex=half firmware=N/A link=no multicast=yes port=MII speed=10MB/s
    resources: iomemory:d0200000-d0200fff ioport:8000-803f irq:11
    *-network
    description: AR5001-0000-0000
    product: Wireless LAN Reference Card
    vendor: Atheros Communications, Inc.
    physical id: 0
    version: 00
    slot: Socket 0
    resources: irq:11
    *-network
    description: Wireless interface
    product: AR5212 802.11abg NIC
    vendor: Atheros Communications, Inc.
    physical id: 1
    bus info: pci@03:00.0
    logical name: ath0
    version: 01
    serial: 00:14:a4:08:31:6a
    width: 32 bits
    clock: 33MHz
    capabilities: bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=ath_pci driverversion=0.9.6.0 (EXPERIMENTAL) multicast=yes wireless=IEEE 802.11
    resources: iomemory:d2000000-d200ffff irq:11
    ubuntu@ubuntu:~$

    It looks like eth1 is actually a wireless interface. And I'm having difficulty enabling eth0. It shows up in the Network Settings dialog and I don't get any errors when I click the "activate" button, but I don't think it actually gets activated.

    Thanks for helping me out with this!
    -astroshaw

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