Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751805AbWEPMaz (ORCPT ); Tue, 16 May 2006 08:30:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751807AbWEPMay (ORCPT ); Tue, 16 May 2006 08:30:54 -0400 Received: from usmimesweeper.bluearc.com ([63.203.197.133]:53509 "EHLO us-mimesweeper.terastack.bluearc.com") by vger.kernel.org with ESMTP id S1751805AbWEPMay convert rfc822-to-8bit (ORCPT ); Tue, 16 May 2006 08:30:54 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: RE: EDAC MC0: UE page 0x1fffa, offset 0x0, grain 4096, row 0, labels ":": i82875p UE Date: Tue, 16 May 2006 13:30:08 +0100 Message-ID: <89E85E0168AD994693B574C80EDB9C2703F774F6@uk-email.terastack.bluearc.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: EDAC MC0: UE page 0x1fffa, offset 0x0, grain 4096, row 0, labels ":": i82875p UE Thread-Index: AcZ4xoY7aoOih3OoQumlqSQQrI70GwAHPBLA From: "Andy Chittenden" To: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1265 Lines: 28 > Every one of our ASUS P4C800-E and ASUS P4C800 based machines > that I've installed a 2.6.16 smp based kernel on is logging > messages of the form: > > EDAC MC0: UE page 0x1fffa, offset 0x0, grain 4096, row 0, > labels ":": i82875p UE > > every second or so. So I've downgraded them back to 2.6.15. I > believe the message is moaning that the ECC memory has > unrecoverable errors. However, the memory in the machines > I've tried passes memtest. And I'd've expected system hangs > which we don't get. Well, memtest passes if I don't enable ECC in memtest. However, if I do, it fails. So it looks like we've got a memory/memory controller issue (the fact that it's happening on all machines with these motherboards implies to me that's a controller/bios issue rather than a memory issue). If I update the AGP aperture in the BIOS to 256Mb (from 64Mb), memtest with ECC enabled passes but linux then boots up extremely slowly. So is this also going to be motherboard/bios issue? -- Andy, BlueArc Engineering - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/