From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Henningsson Subject: Re: [RFC PATCH 1/2] ALSA: hda - Fix "PCM" name being used on one DAC when there are two DACs Date: Thu, 16 Oct 2014 17:10:22 +0200 Message-ID: <543FDFDE.7040800@canonical.com> References: <1413466426-2672-1-git-send-email-david.henningsson@canonical.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from youngberry.canonical.com (youngberry.canonical.com [91.189.89.112]) by alsa0.perex.cz (Postfix) with ESMTP id 73E5B264FFB for ; Thu, 16 Oct 2014 17:10:23 +0200 (CEST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Raymond Yau Cc: tiwai@suse.de, alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On 2014-10-16 17:02, Raymond Yau wrote: > > > > > > In the scenario where there is one "Line Out", one "Speaker" and one > > "Headphone", and there are only two DACs, two outputs will share a DAC. > > Currently any mixer on such a DAC will get the "PCM" name, which is > > misleading. Instead use "Headphone+LO" or "Speaker+LO" to better > > specify what the volume actually controls. > > Are there any examples ? > I used "hda-emu codecs/canonical/alc3226-dell-precision-m2800-ccert-201404-14986 -i 1" when developing the patches. I don't have any hardware available myself that exposes this behavior, but I can maybe fake one with hdajackretask, if that counts... // David