From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932690AbeD0Kjs (ORCPT ); Fri, 27 Apr 2018 06:39:48 -0400 Received: from mail-wm0-f43.google.com ([74.125.82.43]:33239 "EHLO mail-wm0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932433AbeD0Kjr (ORCPT ); Fri, 27 Apr 2018 06:39:47 -0400 X-Google-Smtp-Source: AB8JxZph6FT2Z1B82ae1DeVtx/PoVgbUhum7kRLD0XlccqKyS4Jmd+cjgdPOTKJPvrp5wl51oAe4wA== From: Holger Schurig To: Alexander Duyck Cc: Jeff Kirsher , intel-wired-lan , LKML Subject: Re: [BUG] igb: reconnecting of cable not always detected In-Reply-To: References: <87h8o0ocul.fsf@gmail.com> <877eovobxl.fsf@gmail.com> <87wowumj21.fsf@gmail.com> Date: Fri, 27 Apr 2018 12:39:42 +0200 Message-ID: <87o9i53pch.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 :-)