From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: [usb-audio] VIA/Audinst HUD-mx2: One of two PCM device is available for playback Date: Thu, 04 Jul 2013 13:22:41 +0200 Message-ID: <51D55B01.2090705@ladisch.de> References: <51D3662A.9010708@sakamocchi.jp> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) by alsa0.perex.cz (Postfix) with ESMTP id BDCC6264F0B for ; Thu, 4 Jul 2013 13:22:48 +0200 (CEST) In-Reply-To: <51D3662A.9010708@sakamocchi.jp> 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: Takashi Sakamoto Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Takashi Sakamoto wrote: > This sound card has two PCM devices. If the sound card is realized "card > 0", there are "hw:0,0" and "hw:0,1". But former seems not to generate > sound and latter seems to generate. This device has multiple alternate settings for PCM and AC-3 playback. The driver creates multiple devices for those because it has no other mechanism to distinguish them. The AC-3 setting happens to be listed first in the descriptors. > 2. are there some ways to use hw:0,1 as a default? Entires like these in ~/.asoundrc or /etc/asound.conf: defaults.pcm.card 0 defaults.pcm.device 1 I'd guess the driver could be changed to enumerate alternate settings in two steps, first for PCM formats, then for others. Regards, Clemens