From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: ahci fails with SATA DVD drive, IDE mode works Date: Thu, 19 Feb 2009 18:10:26 +0900 Message-ID: <499D2202.7070503@kernel.org> References: <20090211174558.505354fe@dhcp-100-2-144.bos.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:51787 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753955AbZBSJK0 (ORCPT ); Thu, 19 Feb 2009 04:10:26 -0500 In-Reply-To: <20090211174558.505354fe@dhcp-100-2-144.bos.redhat.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Chuck Ebbert Cc: linux-ide@vger.kernel.org Hello, Chuck Ebbert wrote: > Using kernel 2.6.29-rc3... > > lspci says this device in IDE mode is ID 8086:292d Intel (ICH9M/M-E) > In that mode it works with the ata_piix driver. > > But with ahci mode I get: > > ata2: Sata link up 1.5Gbps (SStatus 113 SControl 300) > ata2.00 ATAPI: TSSTcorp CDDVDW TS-L633A, UO00, max MWDMA2, ATAPI AN > ata2.00 applying bridge limits > ata2.00 configured for PIO4 > ata2.00 qc timeout (cmd 0xa0) > ata2.00 failed to clear UNIT ATTENTION (err_mask=0x5) > ata2: Sata link up 1.5Gbps (SStatus 113 SControl 300) > ata2.00 configured for PIO4 > ata2.00 qc timeout (cmd 0xa0) > ata2.00 failed to clear UNIT ATTENTION (err_mask=0x5) > ata2: limiting SATA link speed to 1.5Gbps > ata2.00 limiting speed to PIO3 > ata2: link is slow to respond, please be patient (ready=0) > ata2: COMRESET failed (errno=-16) > ata2: link is slow to respond, please be patient (ready=0) > ata2: COMRESET failed (errno=-16) > ata2: link is slow to respond, please be patient (ready=0) > ata2: COMRESET failed (errno=-16) > ata2: COMRESET failed (errno=-16) > ata2: reset failed, giving up > ata2.00: disabled > ata2: hard resetting link > ata2: link is slow to respond, please be patient (ready=0) > ata2: COMRESET failed (errno=-16) Can you please attach log of successful boot using ata_piix and the output of "hdparm -I" on the drive? Also, if you put a different harddisk and more preferably a different ATAPI device there, does it work in ahci mode? Thanks. -- tejun