From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: Bug#338089: New aic7xxx driver fails spectacularly on 2940UW Date: Sat, 12 Nov 2005 22:16:58 -0600 Message-ID: <1131855418.4179.7.camel@mulgrave> References: <20051109014713.78691.qmail@web88003.mail.re2.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from stat9.steeleye.com ([209.192.50.41]:4781 "EHLO hancock.sc.steeleye.com") by vger.kernel.org with ESMTP id S1751327AbVKMERg (ORCPT ); Sat, 12 Nov 2005 23:17:36 -0500 In-Reply-To: <20051109014713.78691.qmail@web88003.mail.re2.yahoo.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Graham Knap Cc: Horms , 338089@bugs.debian.org, linux-scsi@vger.kernel.org On Tue, 2005-11-08 at 20:47 -0500, Graham Knap wrote: > Target 0 Negotiation Settings > User: 40.000MB/s transfers (20.000MHz, offset 127, 16bit) > Goal: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) > Curr: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) That's a bit unfortunate ... it shows that the domain validation code negotiated identical settings in the old kernel, so it doesn't look like that's the problem. My best guess would be that the bus is slightly marginal. The aic7xxx drivers are notoriously sensitive to bus problems. Could you try lowering the bus speed to 10MHz in the aic7xxx bios and see if that helps? Thanks, James