From: Robert Hancock <hancockr@shaw.ca>
To: Darrick Burch <darrick@tuffmail.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: SB600 in AHCI mode will not run SATA optical drive
Date: Mon, 05 Jan 2009 19:03:14 -0600 [thread overview]
Message-ID: <4962ADD2.3010007@shaw.ca> (raw)
In-Reply-To: <19325.72.218.132.189.1231202477.squirrel@webmail.tuffmail.net>
Darrick Burch wrote:
> Robert Hancock wrote:
>
>> Could be some kind of SATA PHY quirk or incompatibility that only shows
>> up in AHCI mode or something. It seems from the output that the SATA
>> link may be going up and down. You could try forcing 1.5Gbps
>> (libata.force=1.5Gbps if libata is built in, or force=1.5Gbps when the
>> libata module gets loaded) and see if that helps.
>
> That appears to have done it--thanks! I feel kinda bad now because I was
> suspecting a speed issue, but couldn't figure out how to force it. If I
> had read the kernel documentation a little more, I would have found the
> kernel option you mentioned. Duh. At any rate, thanks again.
Could be we need a quirk in libata for that drive to do that
automatically, or something.. Can you post the dmesg output from bootup
with the force 1.5Gbps option in place?
next prev parent reply other threads:[~2009-01-06 1:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-04 23:33 SB600 in AHCI mode will not run SATA optical drive Darrick Burch
2009-01-05 6:07 ` Robert Hancock
2009-01-06 0:41 ` Darrick Burch
2009-01-06 1:03 ` Robert Hancock [this message]
2009-01-06 2:42 ` Darrick Burch
2009-01-07 4:58 ` Tejun Heo
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