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Thread: Can't access Internet via Ethernet on Haswell Desktop

  1. #1
    Join Date
    Jun 2013
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    5

    Can't access Internet via Ethernet on Haswell Desktop

    (Sorry I've tried suggestions made in related threads but no joy)

    I have a new desktop (Haswell i5-4430 with Asrock Z87 Pro3 motherboard) on which I've installed Ubuntu 12.04.02. However the Ethernet connection doesn't seem to be recognized: attempts to enable networking result in the error message "Network disconnected - you are now offline". The hardware was tested on a Windows system before I got it and Ethernet was working.

    Any help would be much appreciated.

    Some diagnostics:

    cat /etc/network/interfaces
    auto lo
    iface lo inet loopback
    iface eth0 inet dynamic


    ifconfig -a
    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:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

    pan0 Link encap:Ethernet HWaddr ee:0a:87:0b:aa:60
    BROADCAST MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


    lshw -class network
    WARNING: you should run this program as super-user.
    *-network UNCLAIMED
    description: Ethernet controller
    product: Intel Corporation
    vendor: Intel Corporation
    physical id: 19
    bus info: pci@0000:00:19.0
    version: 04
    width: 32 bits
    clock: 33MHz
    capabilities: bus_master cap_list
    configuration: latency=0
    *-network DISABLED
    description: Ethernet interface
    physical id: 2
    logical name: pan0
    serial: ee:0a:87:0b:aa:60
    capabilities: ethernet physical
    configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A
    multicast=yes

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    20,580
    Distro
    Ubuntu 14.10 Utopic Unicorn

    Re: Can't access Internet via Ethernet on Haswell Desktop

    cat /etc/network/interfaces
    auto lo
    iface lo inet loopback
    iface eth0 inet dynamic
    Please open a terminal and do:
    Code:
    gksudo gedit /etc/network/interfaces
    Comment out the incorrect line:
    Code:
    auto lo
    iface lo inet loopback
    #iface eth0 inet dynamic
    Proofread, save and close gedit. Reboot. Now, again in a terminal, let's gather some information:
    Code:
    lspci -nn | grep 0200
    dmesg | grep e100
    Please post the result.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
    Join Date
    Jun 2013
    Beans
    5

    Re: Can't access Internet via Ethernet on Haswell Desktop

    Tx, chili555.

    After commenting out the suggested line in /etc/network/interfaces. the output of those commands is:

    $ lspci -nn | grep 0200
    00:19.0 Ethernet controller [0200]: Intel Corporation Device [8086:153b] (rev 04)
    $ dmesg | grep e100
    $

  4. #4
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    20,580
    Distro
    Ubuntu 14.10 Utopic Unicorn

    Re: Can't access Internet via Ethernet on Haswell Desktop

    Ethernet controller [0200]: Intel Corporation Device [8086:153b] (rev 04)
    Your device is claimed by the driver e1000e, let's do some checking:
    Code:
    modinfo e1000e | grep 153B
    sudo modprobe e1000e
    dmesg | grep e100
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  5. #5
    Join Date
    Jun 2013
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    5

    Re: Can't access Internet via Ethernet on Haswell Desktop

    $ modinfo e1000e | grep 153B
    $ sudo modprobe e1000e
    $ dmesg | grep e100
    [16102.093168] e1000e: Intel(R) PRO/1000 Network Driver - 0.3.3.3-k6
    [16102.093169] e1000e: Copyright (c) 1999-2008 Intel Corporation.

  6. #6
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    20,580
    Distro
    Ubuntu 14.10 Utopic Unicorn

    Re: Can't access Internet via Ethernet on Haswell Desktop

    modinfo e1000e | grep 153B
    When it comes back empty, that tells us the device ID isn't listed in the Ubuntu version you installed, 12.04 LTS. You could install Ubuntu 13.04 and be all set. You could compile and install the latest version of e1000e. That requires several prerequisites that are very difficult to install without a working internet connection.

    Do you have or can you borrow a working wireless device?
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  7. #7
    Join Date
    Jun 2013
    Beans
    5

    Re: Can't access Internet via Ethernet on Haswell Desktop

    Quote Originally Posted by chili555 View Post
    When it comes back empty, that tells us the device ID isn't listed in the Ubuntu version you installed, 12.04 LTS. You could install Ubuntu 13.04 and be all set. You could compile and install the latest version of e1000e. That requires several prerequisites that are very difficult to install without a working internet connection.

    Do you have or can you borrow a working wireless device?
    I'll try installing 13.04: looks like the most attractive option. Thanks for the help.

  8. #8
    Join Date
    Jun 2013
    Beans
    5

    Re: Can't access Internet via Ethernet on Haswell Desktop

    Upgrading to 13.04 did the trick! Thanks again.

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