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Thread: Gigabit lan problem??

  1. #1
    Join Date
    Mar 2005
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    7

    Question Gigabit lan problem??

    Hi everybody, I have a ASUS M2N-MX K8M890 SOCKET AM2 MICRO-ATX mother board which is stated to have gigabit lan.

    I don't feel I get that speed on my gigabit lan at home and need help to verify which driver is used.

    lspci gives me 00:07.0 Bridge: nVidia Corporation MCP61 Ethernet (rev a2) but I don't know what to do with this info.

    What I was thinking is that maybe it has loaded a 100Mb driver instead of a 1000Mb??

    /lawi
    Last edited by lawi; June 6th, 2008 at 08:49 PM.

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    21,462
    Distro
    Ubuntu 15.04 Vivid Vervet

    Re: Gigabit lan problem??

    Is every part of your network gigabit capable? The machine to or from which you are transferring data? The router or switch? If not, then you will get the speed of the weakest link. May we please see which driver is loaded in:
    Code:
    sudo lshw -C network
    Also, we can gain some clues in:
    Code:
    sudo ethtool eth0
    Finally, as far as I know, there is no 100Mb/s driver separate from a 1000Mb/s driver; there is simply a driver. The driver is supposed to, but doesn't always, support whatever capabilities the device is capable of.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
    Join Date
    Mar 2005
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    7

    Re: Gigabit lan problem??

    lshw -C didn't say anything, even tried with output as HTML

    ethtool ->

    Settings for eth0:
    Supported ports: [ MII ]
    Supported link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    1000baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: MII
    PHYAD: 1
    Transceiver: external
    Auto-negotiation: on
    Supports Wake-on: g
    Wake-on: d
    Link detected: yes

    Any ideas?

    /lawi

  4. #4
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    21,462
    Distro
    Ubuntu 15.04 Vivid Vervet

    Re: Gigabit lan problem??

    Code:
    sudo lshw -C network
    lshw -C didn't say anything
    It takes a few moments to collect all that information; did you give it a few moments? Also, the first letter is lower case L. Is that what you typed?
    ---snip---
    Speed: 100Mb/s
    ---snip---
    Auto-negotiation: on
    ---snip---
    It is running at 100Mb/s, not 1000Mb/s, either in error, or because it has negotiated the rate as the maximum rate at which it can reliably transfer data with another device on the network. You can try:
    Code:
    sudo ethtool eth0 speed 1000
    However, if another device on the network has reported it's only able to do 100Mb/s, then you may get errors or other issues. I'd think it's better to troubleshoot the other devices on the network to see why a gigabit device is not operating correctly.
    Last edited by chili555; June 7th, 2008 at 08:10 PM.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  5. #5
    Join Date
    Mar 2005
    Beans
    7

    Re: Gigabit lan problem??

    Ok, thanx I try that

  6. #6
    Join Date
    Dec 2004
    Location
    Oregon, USA
    Beans
    278
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Gigabit lan problem??

    If you look at your output from ethtool you'll see that the adapter is indeed capable of gigabit, but it's not advertising that capability...

    Advertised link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full

    So, other devices are connecting at 100, the fastest speed it advertises. I don't know how to fix this, but it might be a place to begin...

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