From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0001726]: Front and Rear channels swap after first play when playing Surround40 on au8830 Date: Tue, 28 Feb 2006 04:42:57 +0100 Message-ID: <8372ec252b18b96dc2508a32c1f90e2d@bugtrack.alsa-project.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from bugtrack.alsa-project.org (gate.perex.cz [85.132.177.35]) by alsa.jcu.cz (ALSA's E-mail Delivery System) with ESMTP id B147C1A0 for ; Tue, 28 Feb 2006 04:42:57 +0100 (MET) Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org A NOTE has been added to this issue. ====================================================================== ====================================================================== Reported By: Raymond Assigned To: mjander ====================================================================== Project: ALSA - driver Issue ID: 1726 Category: PCI - au88x0 Reproducibility: always Severity: major Priority: normal Status: assigned Distribution: Fedora Core 1 Kernel Version: 2.4.22-1.2199.nptl ====================================================================== Date Submitted: 01-08-2006 17:41 CET Last Modified: 02-28-2006 04:42 CET ====================================================================== Summary: Front and Rear channels swap after first play when playing Surround40 on au8830 Description: The front and rear channels are correct for playing Surround40 only at the first time after the driver is loaded. The front and rear channels (Surround40) always swapped afterward using speaker-test or xine. Playing stereo sound is OK. speaker-test -c4 -D hw:0,0 speaker-test 1.0.11rc2 Playback device is hw:0,0 Stream parameters are 48000Hz, S16_LE, 4 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 2 to 8192 Period size range from 1 to 512 Periods = 4 Buffer time size 2525 To choose buffer_size = 8192 To choose period_size = 2048 was set period_size = 512 was set buffer_size = 8192 0 - Front Left 1 - Front Right 3 - Rear Right 2 - Rear Left Time per period = 11.856821 0 - Front Left 1 - Front Right 3 - Rear Right 2 - Rear Left ====================================================================== ---------------------------------------------------------------------- Raymond - 02-27-06 14:09 ---------------------------------------------------------------------- There is no way to play stereo sound to only rear speakers using the existing driver. snd_pcm_open(handle,"rear",SND_PCM_STREAM_PLAYBACK,SND_PCM_NONBLOCK); Index: alsa-lib/src/conf/cards/AU8830.conf =================================================================== RCS file: /cvsroot/alsa/alsa-lib/src/conf/cards/AU8830.conf,v retrieving revision 1.2 diff -u -r1.2 AU8830.conf --- alsa-lib/src/conf/cards/AU8830.conf 22 Feb 2005 20:23:20 -0000 1.2 +++ alsa-lib/src/conf/cards/AU8830.conf 14 Feb 2006 01:32:06 -0000 @@ -16,7 +16,15 @@ -AU8830.pcm.surround40.0 "cards.AU8830.pcm.front.0" +AU8830.pcm.surround40.0 { + @args [ CARD ] + @args.CARD { + type string + } + type hw + card $CARD + device 0 +} We need AU8830.pcm.rear.0 { @args [ CARD ] @args.CARD { type string } type hooks slave.pcm { type hw card $CARD device 0 } hooks.0 { type ctl_elems hook_args [ { ---------------------------------------------------------------------- Raymond - 02-28-06 04:42 ---------------------------------------------------------------------- xine seem to work but mplayer does not, center can be sent to device 2 instead of device 0 AU8830.pcm.surround51.0 { @args [ CARD ] @args.CARD { type string } type multi slaves [ { pcm { @func concat strings [ "cards.AU8830.pcm.surround40.0:CARD=" $CARD ] } channels 4 } { pcm { @func concat strings [ "cards.AU8830.pcm.surround40.0:CARD=" $CARD ] } channels 1 } { pcm { @func concat strings [ "cards.AU8830.pcm.surround40.0:CARD=" $CARD ] } channels 1 } ] bindings [ { slave 0 channel 0 } { slave 0 channel 1 } { slave 0 channel 2 } { slave 0 channel 3 } { slave 1 channel 0 } { slave 2 channel 0 } ] } Issue History Date Modified Username Field Change ====================================================================== 01-08-06 17:41 Raymond New Issue 01-08-06 17:41 Raymond Distribution => Fedora Core 1 01-08-06 17:41 Raymond Kernel Version => 2.4.22-1.2199.nptl 01-27-06 16:45 Raymond File Added: au88x0_surround40.patch 02-04-06 06:26 Raymond Note Added: 0007912 02-10-06 05:36 ponchick Note Added: 0007987 02-10-06 06:32 Raymond Note Added: 0007991 02-10-06 10:50 ponchick Note Added: 0007998 02-10-06 11:25 Raymond Note Added: 0008000 02-10-06 13:49 Raymond Note Added: 0008003 02-10-06 13:56 Raymond Note Edited: 0008003 02-12-06 07:48 Raymond Note Edited: 0008003 02-12-06 10:12 Raymond Note Edited: 0008000 02-16-06 05:37 ponchick Note Added: 0008085 02-16-06 08:12 Raymond Note Added: 0008088 02-16-06 10:12 Raymond Note Added: 0008090 02-16-06 10:28 Raymond Note Edited: 0008090 02-16-06 16:07 Raymond Note Added: 0008097 02-17-06 03:35 ponchick Note Added: 0008104 02-17-06 04:28 Raymond Note Added: 0008105 02-17-06 04:35 Raymond Note Edited: 0008105 02-17-06 05:56 Raymond Note Edited: 0008105 02-17-06 06:09 Raymond Note Edited: 0008105 02-26-06 07:22 ponchick Note Added: 0008198 02-26-06 13:28 Raymond Note Added: 0008200 02-26-06 14:08 Raymond Note Edited: 0008200 02-27-06 06:57 ponchick Note Added: 0008216 02-27-06 14:09 Raymond Note Added: 0008222 02-28-06 04:42 Raymond Note Added: 0008239 ====================================================================== ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. 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