Re: Loose network connection every hour !

From: Bob Chiodini (rchiodin_at_bellsouth.net)
Date: 02/07/05

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    To: Fedora Core <fedora-list@redhat.com>
Date: Sun, 06 Feb 2005 18:17:53 -0500

    On Sun, 2005-02-06 at 14:28 +0100, Vince wrote:
    > Hi,
    > I encounter a very strange problem with FC 3. Every hour I loose
    > network, I mean I can no more ping my computer nor get any traffic
    > through the Ethernet card. The ethernet card is a realtek !.
    > The only way to get the network back is to push one time the power
    > button of the computer and then networks comes back. I get the
    > following lines then in log of the computer:
    >
    > Feb 6 12:20:26 slimserver kernel: PCI: Found IRQ 12 for device
    > 0000:00:0a.0
    > Feb 6 12:20:26 slimserver kernel: eth0: link up, 100Mbps, full-duplex,
    > lpa 0x45E1
    > Feb 6 12:20:31 slimserver kernel: hub 1-0:1.0: reactivate --> -22
    > Feb 6 12:20:31 slimserver kernel: hub 2-0:1.0: reactivate --> -22
    >
    > Do you have an idea what is doing that ? I have removed apmd services
    > and everything that concerns energy savings !
    > Thanks for all your tips :)
    >
    > Vincèn
    >

    Vince,

    Try turning off auto-negotiation on your Ethernet card. Set it to
    100Mbps full duplex or 10 Mbps half duplex. I had a similar problem
    with a realtek card. I think it was an 8139. It did not negotiate well
    with a dlink router.

    ethtool or mii-tool should help determine which works best, then add the
    appropriate option to /etc/modprobe.conf. I could not find a definition
    of realtek's supported kernel parameters in /usr/share/doc/... Maybe
    google.

    Bob... 

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