linux-kernel - Re: No NCQ support on X61s Ultrabay? (Intel ICH8 SATA controller question)

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Date:	Thu, 30 Apr 2009 19:51:28 -0600
From:	Robert Hancock <hancockrwd@...il.com>
To:	Theodore Tso <tytso@....edu>,
	Alex Buell <alex.buell@...ted.org.uk>,
	Jeff Garzik <jeff@...zik.org>, linux-kernel@...r.kernel.org,
	Matthew Wilcox <willy@...ux.intel.com>,
	Linux IDE mailing list <linux-ide@...r.kernel.org>
Subject: Re: No NCQ support on X61s Ultrabay?  (Intel ICH8 SATA controller
   question)

Theodore Tso wrote:
> 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...

dmesg and lspci -vv output might be useful..
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