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Date: Thu, 30 Apr 2009 07:38:14 -0400
From: Theodore Tso <tytso@mit.edu>
To: Alex Buell <alex.buell@munted.org.uk>, Jeff Garzik <jeff@garzik.org>,
       linux-kernel@vger.kernel.org, Matthew Wilcox <willy@linux.intel.com>,
       Linux IDE mailing list <linux-ide@vger.kernel.org>
Subject: Re: No NCQ support on X61s Ultrabay?  (Intel ICH8 SATA controller
	question)
Message-ID: <20090430113814.GB4809@mit.edu>
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On Thu, Apr 30, 2009 at 07:34:45AM -0400, Theodore Tso wrote:
> On Thu, Apr 30, 2009 at 08:33:09AM +0100, Alex Buell wrote:
> > On Wed, 29 Apr 2009 22:27:46 -0400, I waved a wand and this message
> > magically appears in front of Jeff Garzik:
> > 
> > > As Tejun noted, try switching to AHCI mode in BIOS.
> > 
> > But is there a way to switch modes without needing to go through the
> > BIOS? Some laptops won't let you do that through BIOS. 
> 
> The BIOS setting already is in AHCI mode, and not in "compatibility
> mode".  

Thinking about this a bit more, I'll bet the problem is the BIOS
setting is only affecting the primary SATA ports (which are being
grabed by ahci) and not the SATA port in the Ultrabay slot (which is
being picked up by either the ata_piix or piix driver).  Sigh...

      	     	   	      	       	  - Ted
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