linux-kernel - Re: [BUG 2.6.21-rc3-git9] SATA NCQ failure with Samsum HD401LJ

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Message-ID: <46015EE8.7000001@gmail.com>
Date:	Thu, 22 Mar 2007 01:35:52 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Christian <christiand59@....de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [BUG 2.6.21-rc3-git9] SATA NCQ failure with Samsum HD401LJ

Christian wrote:
> I've tested multiple kernels (including -mm series) in the range of 2.6.19.7
> (before sata_nv adma support went in) up to 2.6.20-rc4.
> Every NCQ enabled kernel I've tested showed ata errors in dmesg. So I came to 
> the conclusion that my system was faulty. I ran memtest86+ for a long time, 
> but no errors were found. After some fiddling with my HW I discovered that 
> the nforce chipset fan induced some kind of electro magnetic interference to 
> the southbridge, which could clearly be heard as a low frequency noise if I 
> plugged in my speakers to the onboard sound. After replacing the fan, my 
> system is stable again. Now running 2.6.21-rc3-mm2+rsdlv31 without errors. 
> Really strange problem he ;-)

Man, that's the strangest way to solve ATA command failures I've ever 
heard of.  Kudos to you for finding it out.  :-)

-- 
tejun
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