From: "Kok, Auke" <auke-jan.h.kok@intel.com>
To: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Cc: Matt Mathis <mathis@psc.edu>, NetDev <netdev@vger.kernel.org>
Subject: Re: e1000 driver problems
Date: Tue, 04 Dec 2007 09:19:11 -0800 [thread overview]
Message-ID: <47558C0F.9000708@intel.com> (raw)
In-Reply-To: <20071204170827.GH8704@ics.muni.cz>
Lukas Hejtmanek wrote:
> On Tue, Dec 04, 2007 at 11:02:23AM -0500, Matt Mathis wrote:
>> This is probably not an e1000 problem, but a general Ethernet "feature".
>> If you defeat auto-negotiation to force the data rate, you implicitly
>> defeat duplex negotiation as well. You need to explicitly set the duplex
>> mode.
>
> ethtool reports, that I have full duplex line:
Matt was almost right - the link partner however might be working in half duplex
mode. in case you force speed/duplex, you are *required* to force the exact same
setting on the link partner, otherwise things like this can happen.
if you "just" want to disable gigabit speed, get the latest ethtool and run:
ethtool -s eth0 advertise 0x0f
which keeps autonegotiation enabled but tells the e1000 card to _not_ advertise
gigabit speed capability to the link partner. The link partner and the e1000 can
then decide with autonegotiation whether to use 10half 10duplex 100half or 100full.
Auke
next prev parent reply other threads:[~2007-12-04 17:19 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-13 21:40 Machine restart doesn't work - Intel 965G, 2.6.19-rc2 Aleksey Gorelov
2006-10-13 21:42 ` Ryan Richter
2006-10-13 21:45 ` Lukas Hejtmanek
2006-10-13 21:46 ` Ryan Richter
2006-10-13 21:49 ` Lukas Hejtmanek
2006-10-13 21:51 ` Ryan Richter
2006-10-17 18:00 ` Ryan Richter
2006-10-17 20:53 ` Aleksey Gorelov
2006-10-17 21:17 ` Machine restart doesn't work - Intel 965G, 2.6.19-rc2 / e1000? Auke Kok
2006-10-17 22:14 ` dared1st
2007-11-20 14:38 ` e1000 driver problems Lukas Hejtmanek
2007-11-26 23:26 ` Kok, Auke
2007-11-27 15:07 ` Lukas Hejtmanek
2007-11-27 16:48 ` Kok, Auke
2007-11-27 17:31 ` Lukas Hejtmanek
2007-11-27 17:40 ` Kok, Auke
2007-11-27 17:44 ` Lukas Hejtmanek
2007-11-27 18:23 ` Kok, Auke
2007-12-03 9:50 ` Lukas Hejtmanek
2007-12-03 15:20 ` Kok, Auke
2007-12-04 15:03 ` Lukas Hejtmanek
2007-12-04 15:34 ` Lukas Hejtmanek
2007-12-04 16:02 ` Matt Mathis
2007-12-04 17:08 ` Lukas Hejtmanek
2007-12-04 17:19 ` Kok, Auke [this message]
2007-12-04 18:05 ` Rick Jones
2007-12-04 19:59 ` Lukas Hejtmanek
2007-12-04 20:38 ` Kok, Auke
2007-12-18 11:08 ` Lukas Hejtmanek
2006-10-17 22:27 ` Machine restart doesn't work - Intel 965G, 2.6.19-rc2 Ryan Richter
2006-10-20 17:57 ` Auke Kok
2006-10-20 18:06 ` Lukas Hejtmanek
2006-10-21 17:34 ` Ryan Richter
2006-10-21 17:56 ` Auke Kok
2006-10-20 18:07 ` Ryan Richter
2006-10-20 18:17 ` Auke Kok
2006-10-20 18:29 ` Lukas Hejtmanek
2006-10-23 20:52 ` Aleksey Gorelov
2006-10-13 21:50 ` Aleksey Gorelov
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