From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Intermittent SATA failures ("link offline, clearing class 1 to NONE") Date: Thu, 03 Dec 2009 09:19:55 +0900 Message-ID: <4B17042B.5070400@kernel.org> References: <1258054583-sup-4108@utwig> <4B14B207.9010208@kernel.org> <1259652273-sup-686@utwig> <4B14D003.30407@kernel.org> <4B14D454.7010300@kernel.org> <1259704924-sup-4007@utwig> <4B15C64E.7090106@kernel.org> <1259774491-sup-9212@utwig> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:40443 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755879AbZLCAUy (ORCPT ); Wed, 2 Dec 2009 19:20:54 -0500 In-Reply-To: <1259774491-sup-9212@utwig> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alex Vandiver Cc: linux-ide On 12/03/2009 02:45 AM, Alex Vandiver wrote: > At Tue Dec 01 20:43:42 -0500 2009, Tejun Heo wrote: >> Can you please try this one? > > Good and bad dmesg output attached. That's interesting. The link state seems to oscillates for quite long time. Can you please try the followings? 1. Change sata_deb_timing_hotplug to sata_deb_timing_long in ata_piix.c::piidx_sidpr_hardreset() and see whether it solves the problem? 2. Switch the controller into ahci mode in BIOS if possible and see whether the problem goes away. 3. Try kernel parameter "libata.force=nohrst" and see whether it makes any difference. Thanks. -- tejun