Subject: [SOLVED] Re: sata_mv 0000:03:06.0: PCI ERROR; PCI IRQ
 cause=0x30000040
From: Bernie Innocenti <bernie@codewiz.org>
To: Tony Vroon <tony@linx.net>
Cc: Mark Lord <liml@rtr.ca>, Harri Olin <harri.olin@gmail.com>,
       linux-ide@vger.kernel.org, lkml <linux-kernel@vger.kernel.org>,
       sysadmin <sysadmin@gnu.org>
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Organization: Sugar Labs - http://www.sugarlabs.org/
Date: Wed, 14 Oct 2009 11:24:25 -0400
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El Thu, 08-10-2009 a las 18:09 +0100, Tony Vroon escribi?:
> On Thu, 2009-10-08 at 12:42 -0400, Bernie Innocenti wrote:
> > El Tue, 06-10-2009 a las 23:13 -0400, Mark Lord escribi?:
> > I want to try reducing the frequency of the PCI-X bus, but the BIOS does
> > not seem to provide a setting for it.  Is there another way?
> 
> Generally this is done with a physical jumper on the board instead.
> You'll find it near to the bridge chip, which is almost always by NEC.
> Another technique to slow the bridge down is to insert a regular PCI
> card in the other slot (these bridges tend to offer 2 or 3 slots). As
> the weakest link, it'll drag everything down to 33MHz.
> An old PCI-X 66MHz-only card may prove helpful here as well. You don't
> have to drive it in any way; getting power to it is sufficient.

Hurray! It seems we've fixed our stability issue at last.

We forced the bus speed down to PCI-X 66MHz for both buses by shorting
pins 1-2 of the on-board jumpers.

-- 
   // Bernie Innocenti - http://codewiz.org/
 \X/  Sugar Labs       - http://sugarlabs.org/

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