From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: Re: SATA: link online but device misclassified Date: Wed, 10 Jun 2009 14:34:21 -0600 Message-ID: <20090610203421.GV3274@parisc-linux.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org To: Marc Bowes Cc: linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org List-Id: linux-ide@vger.kernel.org On Wed, Jun 10, 2009 at 10:31:32PM +0200, Marc Bowes wrote: > Greetings, > > Firstly, I hope that the SCSI list is the correct place to ask about SATA. Not really, linux-ide is the preferred place. > I just got a new chipset (Gigabyte EP45-DQ6) courtesy of a > competition. This coincided with the death of a hard drive. I had to > reinstall my Gentoo system on the new hard drive, and hit this issue > when booting the newly configured Kernel (2.6.29-gentoo-r5): > > ata1: link is slow to respond, please be patient (ready=0) > ata1: softreset failed (device not ready) > ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > ata1: link online but device misclassified, retrying > ata1: link is slow to respond, please be patient (ready=0) > ata1: softreset failed (device not ready) > ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > ata1: link online but device misclassified, retrying > ata1: link is slow to respond, please be patient (ready=0) > ata1: softreset failed (device not ready) > ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > ata1: link online but device misclassified, retrying > ata1: limiting SATA link speed to 1.5 Gbps > ata1: softreset failed (device not ready) > ata1: SATA link up to 1.5 Gbps (SStatus 113 SControl 310) > ata1: link online but device misclassified, device detection might fail > ata2: link is slow to respond, please be patient (ready=0) > ata2: softreset failed (device not ready) > ... (as with ata1) > > This whole process takes a very long time (minutes) to finish. It > seems to be down-grading two of the four SATA-2 drives to SATA-1 > speeds. The drives are actually SATA-2 drives, and appear to work (at > full speed) on my Windows 7 install. What drive model, what ATA controller, and have you checked you're really getting 250MB/s under Windows? -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step."