From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 906EAC43603 for ; Wed, 4 Dec 2019 16:32:48 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9B17C20881 for ; Wed, 4 Dec 2019 16:32:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="oZahRqA9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B17C20881 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 0E45C1665; Wed, 4 Dec 2019 17:31:55 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 0E45C1665 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1575477165; bh=0p4DL6S5eSNCoDbscwHS1Su5xf+/PLPti7gnqLDKdXU=; h=Date:From:To:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=oZahRqA9TWMaRsur8SEhXEDN/5K/vYPmkpGiq/3kqbGZYzKYEnb+UF7wLAZ5VU+Rz gyvy1xse5eTfFpZRmNM/8f37+ng9heMGxv1Pzz15UcMv8FNPrCu6Zlw45kT0iDTMQa +V4+n5GaYPSaf7xDKi2na8NTZ64NrVOG+PbNtl8w= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 91013F801D9; Wed, 4 Dec 2019 17:31:54 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id BD287F801EC; Wed, 4 Dec 2019 17:31:52 +0100 (CET) Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id A8440F800F0 for ; Wed, 4 Dec 2019 17:31:49 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz A8440F800F0 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 7D7AFAC0C; Wed, 4 Dec 2019 16:31:48 +0000 (UTC) Date: Wed, 04 Dec 2019 17:31:48 +0100 Message-ID: From: Takashi Iwai To: Klaus@ethgen.ch In-Reply-To: <20191202184759.GB29478@ikki.ethgen.ch> References: <20191202184759.GB29478@ikki.ethgen.ch> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Cc: alsa-devel@alsa-project.org Subject: Re: [alsa-devel] CPU hook snd_hda_intel X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On Mon, 02 Dec 2019 19:47:59 +0100, Klaus Ethgen wrote: > > Hello, > > Please keep me in Cc when you answer as I am not subscribed to the list. > > I use the most current kernel 5.4.1 (but I did have that problem since > several 5.x versions) on gentoo on a X61s Lenovo laptop. What I see is > that from time to time one CPU is constantly working and draining my > battery with a process kworker/*-events. > > Today I was able to identify the source of the problem. The module > snd-hda-intel seems to produce that load. When I unload the module, the > CPU hook is gone. Even if I load it again, I have a good change to solve > the problem. > > It also helps often to put the laptop to sleep and waking it up again. > > My relevant dmesg part is: > [ 7.186766] snd_hda_intel 0000:00:1b.0: probe_mask set to 0x1 for device 17aa:20ac > [ 7.563277] snd_hda_codec_generic hdaudioC0D0: autoconfig for Generic: line_outs=1 (0x12/0x0/0x0/0x0/0x0) type:speaker > [ 7.563281] snd_hda_codec_generic hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) > [ 7.563284] snd_hda_codec_generic hdaudioC0D0: hp_outs=1 (0x11/0x0/0x0/0x0/0x0) > [ 7.563286] snd_hda_codec_generic hdaudioC0D0: mono: mono_out=0x0 > [ 7.563288] snd_hda_codec_generic hdaudioC0D0: inputs: > [ 7.563292] snd_hda_codec_generic hdaudioC0D0: Internal Mic=0x15 > [ 7.563294] snd_hda_codec_generic hdaudioC0D0: Mic=0x14 > [ 7.563297] snd_hda_codec_generic hdaudioC0D0: Dock Mic=0x1c > > For reference I attach my kernel config to this mail. I am not sure if > it is needed but better give as much as informations that I have. > > So please, if you have any idea how to narrow that problem or even solve > it, help would be appreciated. I guess checking the perf output would give you more clue, e.g. which function is hogging the CPU. Without such information, it's very hard to diagnose... thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org https://mailman.alsa-project.org/mailman/listinfo/alsa-devel