From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Nieder Subject: Re: ACPI failures on Dell Latitude E6220 Date: Thu, 22 Dec 2011 04:08:49 -0600 Message-ID: <20111222100849.GA6548@elie.Belkin> References: <87r50zzvf6.fsf@pirx.pps.jussieu.fr> <87vcp998us.fsf@pirx.pps.jussieu.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-iy0-f174.google.com ([209.85.210.174]:45160 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752691Ab1LVKI6 (ORCPT ); Thu, 22 Dec 2011 05:08:58 -0500 Received: by iaeh11 with SMTP id h11so13297057iae.19 for ; Thu, 22 Dec 2011 02:08:58 -0800 (PST) Content-Disposition: inline In-Reply-To: <87vcp998us.fsf@pirx.pps.jussieu.fr> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Juliusz Chroboczek Cc: linux-acpi@vger.kernel.org Juliusz Chroboczek wrote: >>> [ 227.525937] ACPI Exception: AE_TIME, Returned by Handler for [EmbeddedControl] (20110623/evregion-478) >>> [ 227.525946] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV.ECR1] (Node ffff880128e7a3d0), AE_TIME (20110623/psparse-536) >>> [ 227.525957] ACPI Error: Method parse/execution failed [\ECRB] (Node ffff880128e7a268), AE_TIME (20110623/psparse-536) > > This appears to be fixed, or at least worked around, by Debian's kernel > 3.1.5-1. My idle battery time doubled (yay!). Turbostat indicates that > the CPU is now entering the higher-numbered "PC" states, which it wasn't > doing beforehand. Thanks for the update. Am I right in guessing that 3.1.4-1 is broken, too, and that with 3.1.5-1 the ACPI exceptions are gone? Could you attach "dmesg" output from booting a fixed kernel for reference? >>From a quick glance, none of the fixes introduced by 3.1.5-1 seems to explain this change in an obvious way. Glad to hear the new kernel is working well, though. Curious, Jonathan