Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751489Ab3GaXxi (ORCPT ); Wed, 31 Jul 2013 19:53:38 -0400 Received: from mail-oa0-f52.google.com ([209.85.219.52]:47885 "EHLO mail-oa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750748Ab3GaXxg (ORCPT ); Wed, 31 Jul 2013 19:53:36 -0400 MIME-Version: 1.0 In-Reply-To: References: <20130709012611.GA22371@amd.pavel.ucw.cz> <20130709041321.GA30555@kroah.com> <20130709094906.GA3870@amd.pavel.ucw.cz> <20130709101039.GA4479@amd.pavel.ucw.cz> <20130710132950.GA3684@amd.pavel.ucw.cz> <20130712111121.GB3515@amd.pavel.ucw.cz> From: Bjorn Helgaas Date: Wed, 31 Jul 2013 17:53:15 -0600 Message-ID: Subject: Re: /sys/module/pcie_aspm/parameters/policy not writable? To: Pavel Machek Cc: Greg KH , kernel list , Joe Lawrence , Myron Stowe , Jeff Kirsher , Jesse Brandeburg , Bruce Allan , Carolyn Wyborny , Don Skidmore , Greg Rose , Peter P Waskiewicz Jr , Alex Duyck , John Ronciak , Tushar Dave , "e1000-devel@lists.sourceforge.net" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1379 Lines: 29 On Fri, Jul 19, 2013 at 11:46 AM, Bjorn Helgaas wrote: > Just to make sure I understand you correctly: I think you are saying > that the NIC has the same problem under Windows. Can you confirm or deny that the same problem occurs with Windows? > But since the problem also occurs with Windows, it's pretty likely > that there's a BIOS update to fix it. I notice on the X60 support > page that there are several versions newer than what you're running. Do you have any interest in trying a newer BIOS to see if it's fixed there? If not, I understand; BIOS updates are a hassle at best. You're running BIOS 2.14, and it looks like the current BIOS for an X60 1709 7HU is 2.19 (from http://support.lenovo.com). Carolyn's patch will likely work, at least most of the time, but I think there's a small possibility that it could cause a conflict between the BIOS and the OS over ASPM control, so I'm not 100% in support of that approach. A conflict may not happen on your machine, and not on my machine, but it may happen somewhere, and if it does happen, it's likely to be rare and difficult to debug. Bjorn -- 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/