From: Robert Hancock <hancockrwd@gmail.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Marc Bowes <marcbowes@gmail.com>, linux-ide@vger.kernel.org
Subject: Re: SATA: link online but device misclassified
Date: Thu, 18 Jun 2009 19:38:16 -0600 [thread overview]
Message-ID: <4A3AEC08.4060507@gmail.com> (raw)
In-Reply-To: <1245165697.3965.40.camel@mulgrave.site>
On 06/16/2009 09:21 AM, James Bottomley wrote:
> On Tue, 2009-06-16 at 17:03 +0200, Marc Bowes wrote:
>> Sorry to bother, but this is really bugging me! I can't seem to find anybody
>> else with the same problem. What steps should I be taking to figure this
>> out? I'm thinking I should be trying other kernel versions and/or plugging
>> drives in different places. I don't think the motherboard is faulty, and I
>> seem to be getting good speeds (~70mbs) to all four drives.
>
> Well, those are on the AHCI built in controller. The one with the slow
> response is the empty JMicron 20360/20363. But why this should be so,
> I've no idea ... it looks like the AHCI driver can't tell the phys are
> empty for some reason, which could be due to many things.
I would suspect it's a hardware problem that we can't do much about..
For some reason the controller is reporting the SATA link is online at
3Gbps when there's actually nothing connected. We try to repeatedly
reset the "device" as it doesn't respond properly, until we finally give up.
Can you disable that JMicron controller in the BIOS somehow?
next prev parent reply other threads:[~2009-06-19 1:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-11 0:15 SATA: link online but device misclassified Marc Bowes
2009-06-11 4:27 ` Robert Hancock
2009-06-11 9:31 ` Marc Bowes
2009-06-11 19:01 ` James Bottomley
2009-06-11 19:32 ` Marc Bowes
[not found] ` <cfa4e840906160759m31db333cr555104ca0e3c6255@mail.gmail.com>
2009-06-16 15:03 ` Marc Bowes
2009-06-16 15:21 ` James Bottomley
[not found] ` <cfa4e840906160946qc998331p308624ac10f15060@mail.gmail.com>
[not found] ` <1245171448.3965.46.camel@mulgrave.site>
2009-06-16 18:13 ` Marc Bowes
2009-06-19 1:38 ` Robert Hancock [this message]
2009-06-19 4:00 ` Tejun Heo
2009-06-19 9:38 ` Marc Bowes
2009-06-19 9:44 ` Marc Bowes
2009-06-20 12:34 ` Tejun Heo
2009-06-20 13:13 ` Marc Bowes
2009-06-25 13:54 ` Tejun Heo
2009-06-29 10:20 ` Tejun Heo
2009-07-01 8:07 ` Marc Bowes
2009-07-01 23:31 ` Tejun Heo
2009-07-02 9:22 ` Marc Bowes
2009-07-08 4:14 ` Tejun Heo
[not found] <cfa4e840906101331q71532d72v5361a72e9b77ce63@mail.gmail.com>
2009-06-10 20:34 ` Matthew Wilcox
2009-06-10 20:40 ` Marc Bowes
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