From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0001009]: NVidia CK8S 8ch: a center speaker is always silent in native alsa mode (through alsa-lib), works with oss emulation though Date: Wed, 1 Mar 2006 00:59:18 +0100 Message-ID: <8caa05004a22449fe88f5a991dafe812@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 0F4CE1C2 for ; Wed, 1 Mar 2006 00:59:18 +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 The following issue has been CLOSED ====================================================================== ====================================================================== Reported By: modax Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1009 Category: PCI - intel8x0 Reproducibility: always Severity: major Priority: normal Status: closed Distribution: Debian unstable Kernel Version: vanilla 2.6.11.5 with self-compiled alsa-driver 1.0.9rc1 Resolution: open Fixed in Version: ====================================================================== Date Submitted: 03-22-2005 22:34 CET Last Modified: 03-01-2006 00:59 CET ====================================================================== Summary: NVidia CK8S 8ch: a center speaker is always silent in native alsa mode (through alsa-lib), works with oss emulation though Description: A center speaker stays quiet while playing 5.1 audio directly through alsa-lib (eg. with kaffeine (xine) or mplayer using alsa plugin). As a result, I'm unable to hear what people are speaking in movies because the speech is usually sent to the center speaker (correct me if i'm wrong. i'm new to all this 5.1 business). Anyway, adjusting the volume, muting/unmuting "Center" section, enabling/disabling "Mic As Center/LFE" doesn't have any effect on the center speaker. It stays silent. However, as I noted in the summary, the center speaker works with oss audio driver of xine/mplayer (using oss emulation). However, that mode is not perfect as the center speaker plays the role of left surround and vice versa. In addition, a right surround speaker stays always silent (i guess that's because the RS channel needs to be swapped with LFE; at least I got this impression by having a look at /usr/share/alsa/cards/NForce.conf:surround51). To sum up, my problem is that I can't get the center speaker (which, I guess, is channel 2 on my hardware) working with native alsa apps playing ac3/5.1 audio. ====================================================================== ---------------------------------------------------------------------- modax - 04-25-05 00:03 ---------------------------------------------------------------------- I've tested alsa-driver and alsa-lib CVS as of 2005-04-24 and I really like the new way of surround jacks management. I can confim, that "Independent" works as expected here, not sure about "Shared", but I can test it if you wish. Thanks for your work on this issue. In addition, I want to propose a suggestion to make surround support completely flawless. The "Duplicate Front" switch makes no sence in surround{40,51} modes because it replaces real sound information going to surround channels with front speaker soundstream. "Duplicate Front" is acceptible only in 2ch mode as these is no original surround soundstream. But in 4ch and 6ch it results in original surround soundstream loss. So I've prepared a patch to NFORCE.conf, which resolves the issue by disabling "Duplicate Front" in 4ch and 6ch modes. The patch is against alsa-lib CVS 2005-04-24. ---------------------------------------------------------------------- rlrevell - 12-31-05 00:13 ---------------------------------------------------------------------- Bug seems to be fixed, should the patch be applied? Issue History Date Modified Username Field Change ====================================================================== 03-22-05 22:34 modax New Issue 03-22-05 22:34 modax Distribution => Debian unstable 03-22-05 22:34 modax Kernel Version => vanilla 2.6.11.5 with self-compiled alsa-driver 1.0.9rc1 03-23-05 13:01 tiwai Note Added: 0004156 03-25-05 00:37 modax Note Added: 0004204 03-25-05 00:37 modax File Added: bug-1009.tar.gz 03-30-05 18:22 tiwai Note Added: 0004268 03-30-05 18:22 tiwai File Added: nforce-conf-test.diff 03-30-05 23:28 modax Note Added: 0004275 04-03-05 17:47 modax Note Added: 0004311 04-04-05 09:59 modax Note Added: 0004324 04-07-05 16:28 tiwai Note Added: 0004358 04-08-05 01:55 modax Note Added: 0004371 04-25-05 00:03 modax Note Added: 0004568 04-25-05 00:04 modax File Added: duplicate-front.diff 12-31-05 00:13 rlrevell Note Added: 0007311 03-01-06 00:59 rlrevell Status new => closed ====================================================================== ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. 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