From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raymond Yau Subject: Re: no external mic Date: Fri, 25 Mar 2011 09:19:21 +0800 Message-ID: References: <20110323150255.26552.qmail@info15.gawab.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-fx0-f51.google.com (mail-fx0-f51.google.com [209.85.161.51]) by alsa0.perex.cz (Postfix) with ESMTP id 899C924467 for ; Fri, 25 Mar 2011 02:19:21 +0100 (CET) Received: by fxm6 with SMTP id 6so684067fxm.38 for ; Thu, 24 Mar 2011 18:19:21 -0700 (PDT) In-Reply-To: <20110323150255.26552.qmail@info15.gawab.com> 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: ALSA Development Mailing List List-Id: alsa-devel@alsa-project.org 2011/3/23 leon > > Hello, > i've Laptop Dell Inspiron 1520, > the internal mic works perfectly, but external mic doesn't work, > > i've followed this link: > http://ubuntuforums.org/showthread.php?p=10352564 > but it didn't help me, > > here's the output of ALSA Information Script: > http://www.alsa-project.org/db/?f=3aa8a44412081f533b2de3e32aae76ff4370eae9 > btw, i've been using Ubuntu, and Debian now, both have same > problem. so i haven't tried other Distributions. > > any idea? > The digital mic at 0x17 is connected to [audio selector] 0x1d The other analog input (e.g. ext mic 0x0b,..) are connected to [audio selector] 0x19 [audio selector 0x1d] can select either 0x17 or 0x19 There are two [audio selector] in the audio path from input pins to [Audio Input] Refer to the owner of Dell Vostro 1500 https://bugtrack.alsa-project.org/alsa-bug/view.php?id=5288 It seem that alsa-driver-1.0.24 still has these bug since tthe driver does not call set_mic_route() to setup those dmix_idx of mux_idx of ext mic and digital mic