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Date:   Fri, 27 Apr 2018 12:39:42 +0200
From:   Holger Schurig <>
To:     Alexander Duyck <>
Cc:     Jeff Kirsher <>,
        intel-wired-lan <>,
        LKML <>
Subject: Re: [BUG] igb: reconnecting of cable not always detected

Hi Alex,

> The first are the following 2 lines from your dump:
> Apr 26 10:42:49 kernel: igb 0000:02:00.0 eth0: igb: eth0 NIC Link is
> Up 1000 Mbps Half Duplex, Flow Control: RX
> Apr 26 10:42:49 kernel: igb 0000:02:00.0: EEE Disabled: unsupported at
> half duplex. Re-enable using ethtool when at full duplex.

Can it be the case that this is just a follow-up error?

In one of the mails from yesterday I showed you my patch to disable 1000
MB/s ... and still I had the link-always-down.

Similarly when I used a 10/100 MB/s switch only.

Both scenarios disabled 1000 MB/s, one more strictly than the other :-)

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