From: Auke Kok <auke-jan.h.kok@intel.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: cramerj@intel.com, john.ronciak@intel.com,
jesse.brandeburg@intel.com, jeffrey.t.kirsher@intel.com,
kernel list <linux-kernel@vger.kernel.org>
Subject: Re: e1000: "fix" it on thinkpad x60 / eeprom checksum read fails
Date: Thu, 20 Jul 2006 09:21:58 -0700 [thread overview]
Message-ID: <44BFADA6.6090909@intel.com> (raw)
In-Reply-To: <20060721005832.GA1889@elf.ucw.cz>
Pavel Machek wrote:
> e1000 in thinkpad x60 fails without this dirty hack. What to do with
> it?
>
> Signed-off-by: Pavel Machek <pavel@suse.cz>
NAK, certainly this should never be merged in any tree...
this is a known issue that we're tracking here:
http://sourceforge.net/tracker/index.php?func=detail&aid=1474679&group_id=42302&atid=447449
Summary of the issue:
Lenovo has used certain BIOS versions where ASPD/DSPD was turned on which
turns the PHY off when no cable is inserted to save power. The e1000 driver
already turns off this feature but can't do this until the driver is loaded.
It seems that turning this feature on causes the MAC to give read errors.
Lenovo seems to have the feature turned off in their latest BIOS versions, we
encourage all people to upgrade their BIOS with the latest version from Lenovo
(available from their website). It seems that for at least 2 people, this has
fixed the problem.
Inserting a cable obviously might also work :)
We did reproduce the problem initially with the old BIOS (1.01-1.03) on a T60
system, but unfortunately the bug disappeared into nothingness.
Bypassing the checksum leaves the NIC in an uncertain state and is not
recommended.
Auke
next prev parent reply other threads:[~2006-07-20 16:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-21 0:58 e1000: "fix" it on thinkpad x60 Pavel Machek
2006-07-20 16:21 ` Auke Kok [this message]
2006-07-20 17:07 ` e1000: "fix" it on thinkpad x60 / eeprom checksum read fails Pavel Machek
2006-07-20 17:34 ` Auke Kok
2006-07-21 13:41 ` Andrew Morton
2006-07-21 15:12 ` Theodore Tso
2006-07-21 15:22 ` Auke Kok
2006-07-22 0:21 ` Andrew Morton
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