From owner-freebsd-hackers@FreeBSD.ORG Fri Jul 27 18:48:39 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6A9581065675 for ; Fri, 27 Jul 2012 18:48:39 +0000 (UTC) (envelope-from prvs=1555b974d3=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id EB2438FC22 for ; Fri, 27 Jul 2012 18:48:38 +0000 (UTC) X-Spam-Processed: mail1.multiplay.co.uk, Fri, 27 Jul 2012 19:47:52 +0100 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on mail1.multiplay.co.uk X-Spam-Level: X-Spam-Status: No, score=-5.0 required=6.0 tests=USER_IN_WHITELIST shortcircuit=ham autolearn=disabled version=3.2.5 Received: from r2d2 ([188.220.16.49]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50020968874.msg for ; Fri, 27 Jul 2012 19:47:51 +0100 X-MDRemoteIP: 188.220.16.49 X-Return-Path: prvs=1555b974d3=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-hackers@freebsd.org Message-ID: From: "Steven Hartland" To: "Caza, Aaron" , References: Date: Fri, 27 Jul 2012 19:47:58 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 Cc: Subject: Re: AHCI Timeouts on SATA III with Intel 520 SSDs X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Jul 2012 18:48:39 -0000 That's very useful and could well be what we have here. I've got two new machines which run the SSD's fine @ SATA 3 on port 1 but an identical disk on port 2 is having issues. If we switch it down to SATA 2 and all is good. So sounds like the next move is to switch the disks round and see if the problem stays with the disk or the port. Here's hoping its the disk or the cable and not the controller. Regards Steve ----- Original Message ----- From: "Caza, Aaron" To: "Steven Hartland" ; Sent: Friday, July 27, 2012 5:07 PM Subject: RE: AHCI Timeouts on SATA III with Intel 520 SSDs Yes. In my case, the problem turned out to be a marginal SATA-III port on the motherboard which was determined after swapping SSDs, SATA cables, etcetera to finally pin down the problem. When trouble-shooting this issue, I recall googling a particular missive by Alexander Motion in which he indicates these problems are potentially due to any number of hardware-related reasons hence the exhaustive search for the culprit which, as he suggested, did indeed turn out to be the hardware. It's actually rather interesting how borderline hardware can be - the port in question could handle an Intel 510 SSD running at full SATA-III speed but an Intel 520 pushed it over the brink. ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.