From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?w4lyaWMgUGllbA==?= Subject: Re: [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise Date: Mon, 21 Dec 2009 20:08:34 +0100 Message-ID: <4B2FC7B2.7000001@tremplin-utc.net> References: <8db1092f0912200927y7cdab36ftd1f73d56cd89763f@mail.gmail.com> <8db1092f0912211012mcdd6639oaaf0bddc118e7d66@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <8db1092f0912211012mcdd6639oaaf0bddc118e7d66@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Maciej Rutecki Cc: Takashi Iwai , Linux Kernel Mailing List , alsa-devel@alsa-project.org, perex@perex.cz, "Rafael J. Wysocki" List-Id: alsa-devel@alsa-project.org 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? Eric