From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752259Ab2DPIV0 (ORCPT ); Mon, 16 Apr 2012 04:21:26 -0400 Received: from cantor2.suse.de ([195.135.220.15]:59335 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752047Ab2DPIVY (ORCPT ); Mon, 16 Apr 2012 04:21:24 -0400 Date: Mon, 16 Apr 2012 10:21:22 +0200 Message-ID: From: Takashi Iwai To: Norbert Preining Cc: linux-kernel@vger.kernel.org Subject: Re: Realtek codec eating up battery? In-Reply-To: <20120415233813.GA10731@gamma.logic.tuwien.ac.at> References: <20120415233813.GA10731@gamma.logic.tuwien.ac.at> User-Agent: Wanderlust/2.15.6 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.7 Emacs/23.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org At Mon, 16 Apr 2012 08:38:13 +0900, Norbert Preining wrote: > > Dear all, > > (please Cc) > > running a recent git kernel from today, I see the following in powertop: > 1.02 W 100.0% Device Audio codec hwC0D0: Realtek > > I am quite sure that was not the case in former times, so I wanted to ask > if you think this is a kernel change or a user space change that is > responsible for that? There should be no kernel change for such a problem. Basically the above message means that no power-saving feature is kicked off. Check your mixer setup whether you enabled any analog-loopback controls such as "Mic Playback" or "Line Playback" mutes. If any of these is turned on, the power-saving is suppressed. If it still doesn't change the behavior, please give alsa-info.sh output (run with --no-upload option). thanks, Takashi > AFAIR before I was running on top of git 7c427f45, now > on git 6c23b8e9 and there have been quite some changes regarding realtek > in the meantime: > * tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: > ALSA: hda/realtek - Fix mem leak (and rid us of trailing whitespace). > ALSA: hda/realtek - Add quirk for Mac Pro 5,1 machines > ALSA: hda/realtek - Add a fixup entry for Acer Aspire 8940G > ALSA: hda/realtek - Fix GPIO1 setup for Acer Aspire 4930 & co > ALSA: hda/realtek - Add a few ALC882 model strings back > > output of dmesg wrt realtek/hda: > [ 20.952213] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X > [ 21.004975] hda_codec: ALC262: SKU not ready 0x411111f0 > [ 21.008167] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input10 > [ 21.011878] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11 > [ 21.013351] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12 > > > Thanks a lot and all the best > > Norbert > ------------------------------------------------------------------------ > Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org} > JAIST, Japan TeX Live & Debian Developer > DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 > ------------------------------------------------------------------------ > `You know they've reintroduced the death penalty for > insurance company directors?' > No I didn't. For what offence?' > Trillian frowned. > `What do you mean, offence?' > `I see.' > --- Evidence that there will be some justice in the Universe > --- eventually. > --- Douglas Adams, The Hitchhikers Guide to the Galaxy >