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  • Why would I be told "no carrier" when there are green lights at both en

    From Henry Law@21:1/5 to All on Thu Jan 17 18:32:48 2019
    XPost: uk.comp.homebuilt

    I have a Linux server (actually a Dell PC mini-tower) with three network connections: one via the onboard socket and the other two via PCIe cards.

    On one of the cards there is no network connectivity and "networkctl"
    says "no-carrier". But there are green lights on the NIC and on the
    switch port at the other end (yes I tried a different cable).

    I thought a green light meant there was a carrier, i.e. that level 0 was operating. I must be wrong, but what do the lights mean in that case?

    --
    Henry Law n e w s @ l a w s h o u s e . o r g
    Manchester, England

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  • From Jaimie Vandenbergh@21:1/5 to All on Thu Jan 17 19:04:07 2019
    XPost: uk.comp.homebuilt

    On Thu, 17 Jan 2019 18:32:48 +0000, Henry Law <news@lawshouse.org>
    wrote:

    I have a Linux server (actually a Dell PC mini-tower) with three network >connections: one via the onboard socket and the other two via PCIe cards.

    On one of the cards there is no network connectivity and "networkctl"
    says "no-carrier". But there are green lights on the NIC and on the
    switch port at the other end (yes I tried a different cable).

    I thought a green light meant there was a carrier, i.e. that level 0 was >operating. I must be wrong, but what do the lights mean in that case?

    That's what they're supposed to mean, and usually do.

    I had an Intel X540 fail on me recently that presented the same as
    yours, lights up but no traffic on either port. Firmware would still try
    and PXEboot, the card was recognised and driver loaded by the OS, no
    carrier. Everything was working except the actual networking. Same
    behaviour under CentOS and FreeBSD. Firmware update made no change.

    Toss into the recyclers and pick up a new one.

    Cheers - Jaimie
    --
    "I'd tried caffeine a few times; it made me believe I was focused and energetic, but it turned my judgment to shit. Widespread use of
    caffeine explains a lot about the twentieth century."
    - "Distress", Greg Egan

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  • From Henry Law@21:1/5 to Jaimie Vandenbergh on Thu Jan 17 23:16:09 2019
    XPost: uk.comp.homebuilt

    On 17/01/2019 19:04, Jaimie Vandenbergh wrote:
    Toss into the recyclers and pick up a new one.

    PS you were quite right. Replaced and it's now working fine. Thank you.

    --
    Henry Law n e w s @ l a w s h o u s e . o r g
    Manchester, England

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jaimie Vandenbergh@21:1/5 to All on Fri Jan 18 11:25:36 2019
    XPost: uk.comp.homebuilt

    On Thu, 17 Jan 2019 23:16:09 +0000, Henry Law <news@lawshouse.org>
    wrote:

    On 17/01/2019 19:04, Jaimie Vandenbergh wrote:
    Toss into the recyclers and pick up a new one.

    PS you were quite right. Replaced and it's now working fine. Thank you.

    Sometimes it's the only language these bastards understand.

    Cheers - Jaimie
    --
    I love children, especially when they cry, for then someone takes them away.
    -- Nancy Mitford

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