From mboxrd@z Thu Jan 1 00:00:00 1970 From: Forest Bond Subject: Re: via82xx: unreliable audio, strange mixer behavior Date: Tue, 25 Nov 2008 15:51:42 -0500 Message-ID: <20081125205142.GB28380@storm.local.network> References: <20081120170409.GG17813@storm.local.network> <20081121120823.GD3899@storm.local.network> <20081121163256.GE3899@storm.local.network> <20081124200306.GA14292@storm.local.network> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0281832135032033833==" Return-path: Received: from mail3.webfaction.com (mail3.webfaction.com [70.85.44.146]) by alsa0.perex.cz (Postfix) with ESMTP id 5CCB81037E3 for ; Tue, 25 Nov 2008 21:51:51 +0100 (CET) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Takashi Iwai Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org --===============0281832135032033833== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="z6Eq5LdranGa6ru8" Content-Disposition: inline --z6Eq5LdranGa6ru8 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Tue, Nov 25, 2008 at 12:09:22AM +0100, Takashi Iwai wrote: > At Mon, 24 Nov 2008 15:03:06 -0500, > Forest Bond wrote: > > On Fri, Nov 21, 2008 at 05:36:49PM +0100, Takashi Iwai wrote: > > > At Fri, 21 Nov 2008 11:32:56 -0500, > > > Forest Bond wrote: > > > >=20 > > > > On Fri, Nov 21, 2008 at 01:54:43PM +0100, Takashi Iwai wrote: > > > > > At Fri, 21 Nov 2008 07:08:23 -0500, > > > > > Forest Bond wrote: > > > > > > On Fri, Nov 21, 2008 at 12:59:10PM +0100, Takashi Iwai wrote: > > > > > > > At Thu, 20 Nov 2008 12:04:09 -0500, > > > > > > > Forest Bond wrote: > > > > > > >>=20 > > > > > > >> Hi, > > > > > > >>=20 > > > > > > >> I'm using snd-via82xx on an Ubuntu 8.04 system. alsa-info.s= h output is here: > > > > > > >>=20 > > > > > > >> http://www.alsa-project.org/db/?f=3D1c3d5570e7b57d4d2f79b964= a323dd7b4efd7e78 > > > > > > >>=20 > > > > > > >> Here are the symptoms: > > > > > > >>=20 > > > > > > >> Audio goes away after a semi-random interval. Sometimes it = returns after > > > > > > >> `modprobe -r snd-via82xx' followed by `modprobe snd-via82xx'= , but sometimes it > > > > > > >> seems to take a full reboot. > > > > > > >>=20 > > > > > > >> This looks similar to: > > > > > > >>=20 > > > > > > >> https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3D3D3= 194 > > > > > > >>=20 > > > > > > >> Some folks think that this kind of issue is triggered by aud= io volume being > > > > > > >> above a certain level. I'm not entirely sure if this is tru= e, but I think it > > > > > > >> is. One time, I apparently triggered the issue by unpluggin= g and replugging the > > > > > > >> audio cable from the mainboard during playback. > > > > > > >>=20 > > > > > > >> Audio can be heard even when the PCM volume level is 0 (as t= old by alsamixer). > > > > > > >> The volume does get louder when I turn up that mixer control= , but it never goes > > > > > > >> away entirely when I turn the volume to zero. Mute works as= expected. > > > > > > >=20 > > > > > > > The volume 0 doesn't always mean the mute on several hardware= s. > > > > > > > So this can be irrelevant if it happens always. > > > > > > >=20 > > > > > > > I vaguely remember about the low-power mode of some codec chi= ps. > > > > > > > Which codec chip does your system have? Please run alsa-info= =2Esh with > > > > > > > --no-upload option, and attach the output file. > > > > > >=20 > > > > > > The output would be the same as what was already uploaded, righ= t? I've attached > > > > > > that output here for your convenience. > > > > >=20 > > > > > Thanks, it's always better to post the content than a URL. > > > > >=20 > > > > > Any chance to try the later version of alsa-driver? > > > > > Yours looks pretty old. > > > >=20 > > > > I can try this a bit later today. I'll report the results ASAP. > > >=20 > > > BTW, try the one from the URL below instead of 1.0.18a. > > > This contains the newest alsa-driver snapshot: > > > ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-= driver-snapshot.tar.gz > >=20 > > Brief testing indicates that 1.0.18a seems to fix the issue, actually. = Sorry, I > > forgot that you had asked me to test the snapshot. > >=20 > > Would it be helpful for you for me to try the snapshot as well (maybe t= o check > > for a regression)? >=20 > Yes, it'd be helpful. The snapshot seems to work well, also. Thanks for your help! -Forest --=20 Forest Bond http://www.alittletooquiet.net http://www.pytagsfs.org --z6Eq5LdranGa6ru8 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFJLGVeRO4fQQdv5AwRArMiAKDTsjL26aOMxGT3nRPe5gjVZoG5/gCgnhM0 S5EKXX+ylRY8EfiVraoqEZo= =mh20 -----END PGP SIGNATURE----- --z6Eq5LdranGa6ru8-- --===============0281832135032033833== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel --===============0281832135032033833==--