From: Clemens Ladisch <clemens@ladisch.de>
To: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Cc: alsa-devel@alsa-project.org
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 [thread overview]
Message-ID: <51D55B01.2090705@ladisch.de> (raw)
In-Reply-To: <51D3662A.9010708@sakamocchi.jp>
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
next prev parent reply other threads:[~2013-07-04 11:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-02 23:45 [usb-audio] VIA/Audinst HUD-mx2: One of two PCM device is available for playback Takashi Sakamoto
2013-07-04 11:22 ` Clemens Ladisch [this message]
2013-07-06 11:21 ` Takashi Sakamoto
2013-07-06 14:30 ` Clemens Ladisch
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