From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0001731]: Fixed chip configuration for 5.1 in ALC850 code Date: Wed, 11 Jan 2006 18:38:33 +0100 Message-ID: <97dae165dec1d6429db58c6471159806@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 D9DEB15A for ; Wed, 11 Jan 2006 18:38:33 +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: C-MoH Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1731 Category: PCI - intel8x0 Reproducibility: always Severity: major Priority: normal Status: new Distribution: Kernel Version: ====================================================================== Date Submitted: 01-11-2006 01:17 CET Last Modified: 01-11-2006 18:38 CET ====================================================================== Summary: Fixed chip configuration for 5.1 in ALC850 code Description: Frustrated by the fact that the 5.1 DVD I just bought had no voices (since they were on the center channel) I started to dig into it. The details are in the "steps to reproduce". Attached is a (very) small patch that fixed it completely on my system (both the mixer and the channel mix-up). My guess is that the chip was misconfigured by lack of a bit in the MX76 register. (2 instead of 5 for bits 6:4) ====================================================================== ---------------------------------------------------------------------- C-MoH - 01-11-06 11:58 ---------------------------------------------------------------------- I only tested the patch superficially with speaker-test and the DVD which brought me to this. What I did and worked fine: speaker-test -Dsurround51 -c6 speaker-test -Dsurround40 -c4 speaker-test -c2 For the 5.1 DVD everything was now fine (mixer, sound quality, voice etc.): mplayer -ao alsa -channels 6 dvd:// Also with alsamixer the mixer channels (center and lfe) now do have effect over the volume/muting of sound. The behavior of switches is no longer erratical (i.e. the IEC958/Mix/Mono Mix/Video/DuplicateFront had a weird interaction, which now seemed to have a more normal aspect - in fact I never thought much of it, but I remarked it now). All this made me think it's all right. If you take the time to look at the patch and at the ALC850 specs from Realtek you'll see that... well, there's not much to verify it's correctness. If there's more to do I'll do it and post it here. Remember I'm not a dev here, thus not accustomed to your procedures (I did assume big projects like this do have regression tests). If you want me to do more tests etc. send me the instructions. ---------------------------------------------------------------------- rlrevell - 01-11-06 18:38 ---------------------------------------------------------------------- Ah, OK, I missed the part where you said the patch was based on the ALC850 datasheet. Maintainers, this patch should be applied for the 1.0.11 release. Issue History Date Modified Username Field Change ====================================================================== 01-11-06 01:17 C-MoH New Issue 01-11-06 01:17 C-MoH File Added: cipi.patch 01-11-06 01:21 C-MoH Issue Monitored: C-MoH 01-11-06 01:22 C-MoH Note Added: 0007553 01-11-06 01:33 rlrevell Note Added: 0007554 01-11-06 01:37 C-MoH Note Added: 0007555 01-11-06 01:40 rlrevell Note Added: 0007556 01-11-06 11:54 C-MoH Note Added: 0007562 01-11-06 11:58 C-MoH Note Edited: 0007562 01-11-06 18:38 rlrevell Note Added: 0007565 ====================================================================== ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click