From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raymond Yau Subject: Re: VIA VT1708 bugs Date: Mon, 21 Mar 2011 14:56:18 +0800 Message-ID: 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 9D170243AD for ; Mon, 21 Mar 2011 07:56:19 +0100 (CET) Received: by fxm6 with SMTP id 6so5003108fxm.38 for ; Sun, 20 Mar 2011 23:56:19 -0700 (PDT) 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 >> *Independent* headphone >> >> http://www.viaarena.com/forums/showthread.p*hp*?t=41015 >Ok, that makes some sense. It translates to me as >* With *independent* *HP* turned off - activates auto-mute between >speaker-out/line-out and headphone out. Note the difference between VIA >and Realtek/Sigmatel here as line-out are auto-muted as well. >* With *independent* *HP* turned on - headphone out and speaker-out/line-out >should take output from different PCM subdevices. Practically, it is more complex than the above since the desktop motherboard can have 3 , 5 or 6 audio jacks at rear panel since those hda codecs only have 8 channels instead of 10 Enable Independent HP on a 6stack model should decrease spec->mult_out.max_channels from 8 to 6 for subdevice 0 For 5 jacks model , the driver need to retask blue jack as side only when independent HP switch is off To support 8 channels for a 3stack model need to retask the front HP as side