Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752004AbZLVHE5 (ORCPT ); Tue, 22 Dec 2009 02:04:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751794AbZLVHEz (ORCPT ); Tue, 22 Dec 2009 02:04:55 -0500 Received: from cantor.suse.de ([195.135.220.2]:52438 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750755AbZLVHEz (ORCPT ); Tue, 22 Dec 2009 02:04:55 -0500 Date: Tue, 22 Dec 2009 08:04:53 +0100 Message-ID: From: Takashi Iwai To: =?UTF-8?B?w4lyaWM=?= Piel Cc: Maciej Rutecki , Linux Kernel Mailing List , alsa-devel@alsa-project.org, perex@perex.cz, "Rafael J. Wysocki" Subject: Re: [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise In-Reply-To: <4B2FC7B2.7000001@tremplin-utc.net> References: <8db1092f0912200927y7cdab36ftd1f73d56cd89763f@mail.gmail.com> <8db1092f0912211012mcdd6639oaaf0bddc118e7d66@mail.gmail.com> <4B2FC7B2.7000001@tremplin-utc.net> 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/23.1 (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=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2630 Lines: 76 At Mon, 21 Dec 2009 20:08:34 +0100, Éric Piel wrote: > > Op 21-12-09 19:12, Maciej Rutecki schreef: > > 2009/12/21 Takashi Iwai : > >> At Sun, 20 Dec 2009 18:27:45 +0100, > >> Maciej Rutecki wrote: > >>> > >>> Hi > >>> > >>> Affected kernel: 2.6.33-rc1 > >>> Last known good: 2.6.32 > >> > >> The only fundamental change, AFAIK, is the use of MSI as default. > >> Could you try to add enable_msi=0 option to snd-hda-intel? > >> > > > > root@gumis:/# cat /sys/module/snd_hda_intel/parameters/enable_msi > > 0 > > > > Still the same: > > ps aux: > > > > root 1117 27.4 0.0 0 0 ? S 19:00 2:05 [hd-audio0] > > > > I also notice short sound during booting system, when sound modules is > > loading. I can try bisection, but in next week; already I don't have > > to much time. > Hello, > I've got the same problem here (high hd-audio0 usage + clicks in the > output sound). > > Hardware is identical: > /proc/asound/pcm > 00-00: AD198x Analog : AD198x Analog : playback 1 : capture 1 > > I haven't tried the enable_msi parameter but, just to give more info, > here is the log ("dmesg | grep -i hda") when the bug happens: > Dec 18 10:39:10 dutifh kernel: HDA Intel 0000:00:1b.0: power state > changed by ACPI to D0 > Dec 18 10:39:10 dutifh kernel: HDA Intel 0000:00:1b.0: PCI INT A -> GSI > 17 (level, low) -> IRQ 17 > Dec 18 10:39:10 dutifh kernel: input: HDA Digital PCBeep as > /devices/pci0000:00/0000:00:1b.0/input/input12 > Dec 18 10:39:10 dutifh kernel: hda-intel: azx_get_response timeout, > switching to polling mode: last cmd=0x006f0900 > > And here is with 2.6.32, working fine > Dec 18 11:46:03 dutifh kernel: HDA Intel 0000:00:1b.0: power state > changed by ACPI to D0 > Dec 18 11:46:03 dutifh kernel: HDA Intel 0000:00:1b.0: PCI INT A -> GSI > 17 (level, low) -> IRQ 17 > Dec 18 11:46:03 dutifh kernel: input: HDA Digital PCBeep as > /devices/pci0000:00/0000:00:1b.0/input/input11 > > Could it be coming from this timeout? It shouldn't. The polling mode doesn't give any behavioral change, and the CPU usage can't be that high. Try is to pass bdl_pos_adj=0 option. This should reduce the CPU hog, at least. But it doesn't mean it's the right fix... Another thing to try is to replace the whole HD-audio stack with the last working one (was it 2.6.32?), and check whether it works with 2.6.32 core. thanks, Takashi -- 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/