From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juliusz Chroboczek Subject: Re: ACPI failures on Dell Latitude E6220 Date: Sun, 25 Dec 2011 17:55:37 +0100 Message-ID: <7iwr9k616e.fsf@lanthane.pps.jussieu.fr> References: <87r50zzvf6.fsf@pirx.pps.jussieu.fr> <87vcp998us.fsf@pirx.pps.jussieu.fr> <20111222100849.GA6548@elie.Belkin> <7iipl8d9kk.fsf@lanthane.pps.jussieu.fr> <8739cavt48.fsf@pirx.pps.jussieu.fr> <20111224210300.GI25883@elie.Belkin> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from shiva.jussieu.fr ([134.157.0.129]:49900 "EHLO shiva.jussieu.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753486Ab1LYQ4G (ORCPT ); Sun, 25 Dec 2011 11:56:06 -0500 In-Reply-To: <20111224210300.GI25883@elie.Belkin> (Jonathan Nieder's message of "Sat, 24 Dec 2011 15:03:00 -0600") Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Jonathan Nieder Cc: linux-acpi@vger.kernel.org >> I've tried 3.0.0-3, 3.1.1-1, 3.1.4-1, 3.1.5-1 and 3.2~rc4-1~experimental.1, >> and the system enters PC7 and has decent battery life under all of them. > What's weird is how gradually it got fixed on your system. :) First > v3.1.5 was fixed and 3.2-rc4 not fixed, and then everything fixed. No mystery there. I ran apt-get upgrade, removed 3.2-rc4, then switched to the 3.1.5 kernel. I never tested 3.2-rc4 after the upgrade. (Note by the way that it's actually looking more complex than that -- it looks like there are three levels of power consumption, the inital very high one, a medium one, and the low one that I'm enjoying right now. I believe that I can reproduce the medium one on the older kernels, but I'm not 100% positive about it -- I'd need to do some more precise measurements. The only thing that I'm 100% positive about is that the CPU is reliably entering PC7 under all kernels now.) > Would you still be interested in tracking the ACPI method parse/execution > failures? I'll be glad to help if I can do that without having to understand too much about ACPI. -- Juliusz