eth0 not working with Homeplug adapter - Networking

This is a discussion on eth0 not working with Homeplug adapter - Networking ; Hi, I'm stuck trying to get my laptop to work with a Solwise PL-14PE HomePlug adapter. I posted over on the Kubuntu forum, but got no replies. The eth0 network port works fine when plugged directly into my router. The ...

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Thread: eth0 not working with Homeplug adapter

  1. eth0 not working with Homeplug adapter

    Hi,

    I'm stuck trying to get my laptop to work with a Solwise PL-14PE HomePlug
    adapter. I posted over on the Kubuntu forum, but got no replies.

    The eth0 network port works fine when plugged directly into my router.
    The eth0 network port doesn't work when plugged into the HomePlug adapter.
    Tried two different cables and two different HomePlugs.
    I tested the HomePlugs and cables on a desktop PC and an XBox - both work
    fine.

    /var/syslog when connected to router:
    Aug 19 14:02:55 Laptop kernel: [ 17.212000] sky2 0000:09:00.0: v1.18 addr
    0xfe8fc000 irq 16 Yukon-FE+ (0xb8) rev 0
    Aug 19 14:02:55 Laptop kernel: [ 17.212000] sky2 eth0: addr
    00:21:9b:cf:0a:65
    Aug 19 14:02:55 Laptop kernel: [ 17.224000] sky2 eth0: enabling interface
    Aug 19 14:02:55 Laptop kernel: [ 19.056000] sky2 eth0: Link is up at 100
    Mbps, full duplex, flow control rx

    /var/syslog when connected to HomePlug:
    Aug 19 14:19:08 Laptop kernel: [ 997.964000] sky2 eth0: Link is up at 10
    Mbps, half duplex, flow control none
    Aug 19 14:19:08 Laptop kernel: [ 998.108000] sky2 eth0: Link is down.
    Aug 19 14:19:10 Laptop kernel: [ 999.668000] sky2 eth0: Link is up at 10
    Mbps, half duplex, flow control none
    Aug 19 14:19:10 Laptop kernel: [ 999.788000] sky2 eth0: Link is down.
    Aug 19 14:19:12 Laptop kernel: [ 1001.556000] sky2 eth0: Link is up at 10
    Mbps, half duplex, flow control none
    Aug 19 14:19:12 Laptop kernel: [ 1001.676000] sky2 eth0: Link is down.
    Aug 19 14:19:14 Laptop kernel: [ 1003.888000] sky2 eth0: Link is up at 10
    Mbps, half duplex, flow control none
    Aug 19 14:19:14 Laptop kernel: [ 1004.024000] sky2 eth0: Link is down.
    :
    which repeats until I unplug the cable.

    andrew@Laptop:~$ sudo ethtool eth0
    Settings for eth0:
    Supported ports: [ TP ]
    Supported link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    Advertised auto-negotiation: Yes
    Speed: 10Mb/s
    Duplex: Half
    Port: Twisted Pair
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: pg
    Wake-on: d
    Current message level: 0x000000ff (255)
    Link detected: no

    andrew@Laptop:~$ sudo lshw -C network
    [sudo] password for andrew:
    *-network
    description: Ethernet interface
    product: 88E8040 PCI-E Fast Ethernet Controller
    vendor: Marvell Technology Group Ltd.
    physical id: 0
    bus info: pci@0000:09:00.0
    logical name: eth0
    version: 12
    serial: 00:21:9b:cf:0a:65
    size: 100MB/s
    capacity: 100MB/s
    width: 64 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical
    tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
    configuration: autonegotiation=on broadcast=yes driver=sky2
    driverversion=1.18 duplex=full firmware=N/A ip=192.168.0.110 latency=0
    link=yes module=sky2 multicast=yes port=twisted pair speed=100MB/s
    *-network
    description: Wireless interface
    product: PRO/Wireless 3945ABG Network Connection
    vendor: Intel Corporation
    physical id: 0
    bus info: pci@0000:0b:00.0
    logical name: eth1
    version: 02
    serial: 00:1f:3c:59:83:f2
    width: 32 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical
    wireless
    configuration: broadcast=yes driver=ipw3945 driverversion=1.2.2mp
    firmware=14.2 1:0 () ip=192.168.0.199 latency=0 link=no module=ipw3945
    multicast=yes wireless=unassociated

    Any ideas what the problem is and how to resolve it? Thanks in advance.

  2. Re: eth0 not working with Homeplug adapter

    Andrew Woodward wrote:
    > The eth0 network port works fine when plugged directly into my router.
    > The eth0 network port doesn't work when plugged into the HomePlug adapter.

    Is it (wrongly) a cross-over cable that you're using? Many routers can
    handle automatic cross-over detection, but the HomePlugs probably can't.

    What's the output of "mii-tool eth0" for these two scenarios? (Each time,
    wait one minute after plugging in the cable before trying the command.)


    > Tried two different cables and two different HomePlugs.
    > I tested the HomePlugs and cables on a desktop PC and an XBox - both work
    > fine.

    Do you mean that you plugged the desktop PC and the XBox into the
    HomePlug adapter? If not, what exactly did you do to test the HomePlugs
    and cables?

    Chris

  3. Re: eth0 not working with Homeplug adapter

    Chris Davies wrote:

    > Andrew Woodward wrote:
    >
    > Is it (wrongly) a cross-over cable that you're using? Many routers can
    > handle automatic cross-over detection, but the HomePlugs probably can't.
    >

    No, it's not a cross-over cable; definitely a patch lead.

    > What's the output of "mii-tool eth0" for these two scenarios? (Each time,
    > wait one minute after plugging in the cable before trying the command.)
    >

    (see below)

    >
    >> Tried two different cables and two different HomePlugs.
    >> I tested the HomePlugs and cables on a desktop PC and an XBox - both work
    >> fine.
    >
    > Do you mean that you plugged the desktop PC and the XBox into the
    > HomePlug adapter? If not, what exactly did you do to test the HomePlugs
    > and cables?
    >

    Yes, two different devices plugged into the same HomePlug / cable
    combination worked immediately.

    I *may* have solved the problem. After posting I began to wonder if it was
    the driver that was causing the issues. Google returned lots of hits re the
    sky2 driver on a slightly different model Marvell Yukon interface. I
    downloaded and compiled the sk98lin driver as suggested. This time the
    connection via the HomePlug was stable, but kept returning route errors,
    e.g.
    andrew@Laptop:~$ ping 192.168.0.1
    PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
    From 192.168.0.110 icmp_seq=2 Destination Host Unreachable
    From 192.168.0.110 icmp_seq=3 Destination Host Unreachable
    From 192.168.0.110 icmp_seq=4 Destination Host Unreachable
    From 192.168.0.110 icmp_seq=5 Destination Host Unreachable
    :


    I left the laptop connected for several hours while I went out, and when I
    returned, without changing anything, it was working! I don't know why. It's
    getting late now; I'll have a look tomorrow afternoon if I get chance.


    Incidentally, under both scenarios sudo mii-tool eth0 returns
    andrew@Laptop:~$ sudo mii-tool eth0
    [sudo] password for andrew:
    SIOCGMIIPHY on 'eth0' failed: Bad address

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