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Thread: Wired ethernet not getting detected

  1. #1
    Join Date
    Jun 2010
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    7
    Distro
    Ubuntu 10.04 Lucid Lynx

    Question Wired ethernet not getting detected

    Hello Everyone,

    I have installed Ubuntu 10.04-64 bit ( Lucid Lynx ) on my Dell Inspiron N4010 laptop.

    I'm unable to detect my wired ethernet.
    I tried searching for it extensively but I think I was unable to make sense out of the posts already present.

    I know this has something to do with the need to install the correct drivers.

    Also posting the output of few popular commands which I'm sure I would be asked to execute.

    ==========================================
    sudo ifconfig -a

    Output :
    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    ...........
    ...........

    No other interfaces were detected apart from loopback.
    ================================================
    lspci
    Output :
    ...........
    ...........
    03:00.0 Network controller: Broadcom Corporation Device 4727 (rev 01)
    04:00.0 Ethernet controller: Atheros Communication AR8152 v1.1 Fast Ethernet (rev c1)
    =================================================
    ifup eth0
    Output :
    Ignoring unknown interface eth0=eth0
    =================================================
    Please let me know if you need any more information.

    Looking forward to some pointers on this issue.

    Cheers!
    Last edited by rbisawa; June 9th, 2010 at 06:26 PM.

  2. #2
    Join Date
    Aug 2007
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    5,538
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Wired ethernet not getting detected

    Please also post the output of these commands:
    Code:
    cat /etc/network/interfaces
    cat /etc/NetworkManager/nm-system-settings.conf
    dmesg | grep -e eth0 -e bcm
    ifconfig -a
    They should help straighten things out.

  3. #3
    Join Date
    Jun 2010
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    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Wired ethernet not getting detected

    @pytheas22

    Sorry was at office since morning.

    Here you are with all the outputs.

    ===============================================
    cat /etc/network/interfaces

    Output :
    auto lo
    iface lo inet loopback
    ================================================== ===
    cat /etc/NetworkManager/nm-system-settings.conf
    Output :
    # ...some comments...
    [main]
    plugins=ifupdown,keyfile

    [ifupdown]
    managed=false
    ================================================== ===
    dmesg | grep -e eth0 -e bcm
    Output :
    <No output>
    ================================================== ===
    ifconfig -a
    Output :
    Same as given in my 1st post...only loopback interface is being displayed.
    ================================================== ===

    Do let me know if you want any more info.

    Anticipating a quick reply. Thanks.

    Cheers!

  4. #4
    Join Date
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    Ubuntu 11.04 Natty Narwhal

    Re: Wired ethernet not getting detected

    hmmm, it seems like the system is not trying to initialize the hardware at all, even though it doesn't recognize that it's present, according to the "lspci" output from your first post.

    I'll have to ask for a little more information so we can figure out if any driver is even trying to claim the ethernet device. Could you please post the output of:
    Code:
    lshw -C Network
    lspci -nn

  5. #5
    Join Date
    Jun 2010
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    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Wired ethernet not getting detected

    Here you are with the outputs :

    ================================================== =====
    lshw -C Network
    Output :
    WARNING: you should run this program as super-user.
    *-network UNCLAIMED
    description: Network controller
    product: Broadcom Corporation
    vendor: Broadcom Corporation
    physical id: 0
    bus info: pci@0000:03:00.0
    version: 01
    width: 64 bits
    clock: 33MHz
    capabilities: bus_master cap_list
    configuration: latency=0
    resources: memory:f0500000-f0503fff
    *-network UNCLAIMED
    description: Ethernet controller
    product: AR8152 v1.1 Fast Ethernet
    vendor: Atheros Communications
    physical id: 0
    bus info: pci@0000:04:00.0
    version: c1
    width: 64 bits
    clock: 33MHz
    capabilities: bus_master cap_list
    configuration: latency=0
    resources: memory:f0400000-f043ffff ioport:2000(size=128)
    ================================================== ====
    lspci -nn
    Output :
    00:00.0 Host bridge [0600]: Intel Corporation Core Processor DRAM Controller [8086:0044] (rev 12)
    00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 12)
    00:16.0 Communication controller [0780]: Intel Corporation 5 Series/3400 Series Chipset HECI Controller [8086:3b64] (rev 06)
    00:1a.0 USB Controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b3c] (rev 06)
    00:1b.0 Audio device [0403]: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio [8086:3b56] (rev 06)
    00:1c.0 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 [8086:3b42] (rev 06)
    00:1c.1 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 [8086:3b44] (rev 06)
    00:1c.5 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 [8086:3b4c] (rev 06)
    00:1d.0 USB Controller [0c03] Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b34] (rev 06)
    00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev a6)
    00:1f.0 ISA bridge [0601]: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller [8086:3b0b] (rev 06)
    00:1f.2 SATA controller [0106]: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller [8086:3b2f] (rev 06)
    00:1f.3 SMBus [0c05]: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller [8086:3b30] (rev 06)
    00:1f.6 Signal processing controller [1180]: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem [8086:3b32] (rev 06)
    03:00.0 Network controller [0280]: Broadcom Corporation Device [14e4:4727] (rev 01)
    04:00.0 Ethernet controller [0200]: Atheros Communications AR8152 v1.1 Fast Ethernet [1969:2060] (rev c1)
    ff:00.0 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers [8086:2c62] (rev 02)
    ff:00.1 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture System Address Decoder [8086:2d01] (rev 02)
    ff:02.0 Host bridge [0600]: Intel Corporation Core Processor QPI Link 0 [8086:2d10] (rev 02)
    ff:02.1 Host bridge [0600]: Intel Corporation Core Processor QPI Physical 0 [8086:2d11] (rev 02)
    ff:02.2 Host bridge [0600]: Intel Corporation Core Processor Reserved [8086:2d12] (rev 02)
    ff:02.3 Host bridge [0600]: Intel Corporation Core Processor Reserved [8086:2d13] (rev 02)
    ================================================== =====

    Hope the above outputs can give us some lead.

    Cheers!

  6. #6
    Join Date
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    Re: Wired ethernet not getting detected

    Your ethernet hardware seems to be quite new and doesn't have a driver built into Ubuntu as of yet. However, there's a driver included in the compat-wireless stack that you can use (I have no idea why they included an ethernet driver in compat-wireless, but according to these emails, someone did).

    To download, compile and install the driver, first go to http://linuxwireless.org/download/compat-wireless-2.6 and download the file named "compat-wireless-2.6.tar.bz2" (you can't download it in the terminal because of anti-hotlinking). Save it to your desktop. Then run these commands (the first two commands require that you either have an Internet connection, or have your Ubuntu installation CD enabled as a software repository):
    Code:
    sudo apt-get update
    sudo apt-get install build-essential
    cd ~/Desktop
    tar -xjvf compat-wireless-2.6.tar.bz2
    cd compat-wireless*
    scripts/driver-select atl1c
    make
    sudo make install
    Then reboot. Hopefully your ethernet will work automatically after reboot; if not, run:
    Code:
    sudo modprobe atl1c
    to insert the driver. Let me know how it goes.

    We can probably make your wireless work too, if you're interested.
    Last edited by pytheas22; September 30th, 2011 at 09:21 PM.

  7. #7
    Join Date
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    Ubuntu 10.04 Lucid Lynx

    Thumbs up Re: Wired ethernet not getting detected

    Yo !!

    Wired ethernet is now up n running !!

    I performed all the steps suggested in the previous post and rebooted.

    @pytheas22 : Thanks a lot dude. Keep up the good work.

    Can you also post the commands to enable wireless networking and bluetooth if possible.
    Although I don't have a wireless router to test the connection still it would be nice
    if I could get it up n ready to use anytime.


    Cheers n keep Ubunting !!

  8. #8
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    Re: Wired ethernet not getting detected

    Glad to hear the ethernet is sorted out The only caveat is that whenever you get a new kernel from Ubuntu Updates (usually updated kernel packages are pushed out once a month or so), you will have to recompile the ethernet driver by repeating the steps in my previous post in order to make the driver work with the new kernel. Hopefully the next release of Ubuntu (in October) will include support for your card out-of-the-box and this will no longer be an issue.

    As for the wireless, that shouldn't be too hard to get up and running. Your device needs a closed-source driver that Ubuntu doesn't ship by default, but you can install it easily by running:
    Code:
    sudo apt-get install bcmwl-kernel-source
    echo wl | sudo tee -a /etc/modules
    After that, you should be able to connect to wireless networks (when there's one around to connect to) using the NetworkManager applet in the upper-right corner of your screen. The wireless driver should be updated automatically whenever the kernel is, so in this case you don't have to worry about recompiling manually.

    I've never owned a bluetooth device so I don't have experience dealing with one in Linux, unfortunately. I assume, though, that you've gone to System>Preferences>Bluetooth and was told that no bluetooth devices were present? If that's the case, I'll do my best to set you on the right path if you could plug the bluetooth device in and then post the output of:
    Code:
    lsusb

  9. #9
    Join Date
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    Ubuntu 10.04 Lucid Lynx

    Smile Re: Wired ethernet not getting detected

    Yes, as soon as I got my ethernet working I went for an upgrade using the update manager. In the process it also upgraded the kernel which resulted in losing the driver again. But I reinstalled the driver using the steps mentioned previously and it was up again.

    Regarding the wireless network, I read in one of the posts that it could be installed using the Hardware Manager which was a cake walk and I guess the above commands given by you would do the same.

    Also bluetooth is now enabled after switching on the Bluetooth adapter in Windows.

    Will get back if need any more help in this regard.

    Cheers!

  10. #10
    Join Date
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    Re: Wired ethernet not getting detected

    I am also having the same problems.

    I will try this solution today and post it here.

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