From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hector Martin Subject: Re: Request for Device ID addition : 6935G Date: Sat, 13 Jun 2009 18:11:15 +0200 Message-ID: <4A33CFA3.7080402@marcansoft.com> References: <4b8c423b0906121924u757d590ay49e09f3fea3c99e@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.marcansoft.com (marcansoft.com [80.68.93.119]) by alsa0.perex.cz (Postfix) with ESMTP id 2295024591 for ; Sat, 13 Jun 2009 18:11:20 +0200 (CEST) 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: Karthik Ramgopal , alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Takashi Iwai wrote: > Hector, does it work on your machine? If yes, there should be a > slight difference between 6935G and 8930G... Yes, the DMIC works fine here (in mono mode). Karthik: please look in sound/pci/hda/patch_realtek.c and locate the alc889_acer_aspire_8930g_verbs array. At the end, where it talks about the "DMIC fix", find the last verb: {0x20, AC_VERB_SET_PROC_COEF, 0x0003}, And change the value from 0x0003 to 0x0001 and see what that does. If this works and you get some audio, make a stereo recording. You want both channels to be of equal volume. I suspect you have a mono mic on the left channel. I have a stereo sum/difference mic (WTF) with sum on the right channel, so I tweaked the setting to replicate the right channel to both. This would kill your audio if your microphone is just a mono one on the left channel. Setting 0x0001 should get you standard stereo audio as it comes from the mic(s). I think setting 0x0002 should get you what you want (left channel replicated to both channels). If not, try setting 0x0000. Takashi: if I'm right, we'll need two model entries instead of one and we should probably split off the verb array into three (base, stereo sum/dif mic fix, mono mic fix). -- Hector Martin (hector@marcansoft.com) Public Key: http://www.marcansoft.com/marcan.asc