From: David Henningsson <david.henningsson@canonical.com>
To: Clemens Ladisch <clemens@ladisch.de>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
Subject: Re: alsactl adds volume controls?
Date: Fri, 27 Aug 2010 20:36:11 +0200 [thread overview]
Message-ID: <4C78059B.50801@canonical.com> (raw)
In-Reply-To: <4C77DD09.3060909@ladisch.de>
2010-08-27 17:43, Clemens Ladisch skrev:
> David Henningsson wrote:
>> So I've discovered that my sound card has a "PCM Playback Volume"
>> control, but changing that control does not alter the volume.
>>
>> Interestingly enough, this control does not come from the HDA parser, it
>> is added by alsactl at boot time...!
>
> This control was created by the software volume plugin. When not using
> this plugin, the control does not have any effect.
>
> To get rid of it, delete its entry from /etc/asound.state.
Hmm, I wonder if this is an Ubuntu-specific bug then? Because when I run
Maverick (the upcoming Ubuntu release) from a Live-CD, the "PCM Playback
Volume" control is still there (and there is no asound.state, neither in
/etc or in /var/lib/alsa).
When I use the plughw interface, the "PCM Playback Volume" does not
affect volume output. Should I use another device string to test the
softvol plugin, to see if it's there or not?
Btw, I still think it's strange that a userspace plugin, with controls
that only effects userspace, still can create controls in kernel-space.
Am I missing something?
--
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic
next prev parent reply other threads:[~2010-08-27 18:36 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-27 14:39 alsactl adds volume controls? David Henningsson
2010-08-27 15:43 ` Clemens Ladisch
2010-08-27 18:36 ` David Henningsson [this message]
2010-08-27 22:58 ` Raymond Yau
2010-08-30 8:01 ` Takashi Iwai
2010-08-30 9:30 ` Raymond Yau
2010-08-30 11:09 ` Takashi Iwai
2010-08-30 13:01 ` David Henningsson
2010-08-30 13:08 ` Takashi Iwai
2010-09-01 13:26 ` David Henningsson
2010-09-01 14:06 ` Raymond Yau
2010-09-02 8:06 ` Takashi Iwai
2010-09-02 9:24 ` David Henningsson
2010-09-02 9:44 ` Takashi Iwai
2010-09-03 7:03 ` David Henningsson
2010-09-03 7:07 ` Jaroslav Kysela
2010-10-02 0:51 ` Raymond Yau
2010-09-03 7:23 ` Raymond Yau
2010-09-02 14:10 ` Jaroslav Kysela
2010-09-02 14:21 ` Clemens Ladisch
2010-09-02 15:24 ` Jaroslav Kysela
2010-09-02 15:52 ` Clemens Ladisch
2010-09-02 17:28 ` Jaroslav Kysela
2010-09-02 20:28 ` Sebastian H.
2010-09-29 14:26 ` Colin Guthrie
2010-09-29 18:09 ` Mark Brown
2010-09-30 9:17 ` Raymond Yau
2010-09-30 11:03 ` Clemens Ladisch
2010-09-30 15:09 ` Colin Guthrie
2010-09-30 15:56 ` Clemens Ladisch
2010-09-30 16:47 ` Mark Brown
2010-09-30 18:09 ` Takashi Iwai
2010-09-30 18:20 ` Colin Guthrie
2010-09-30 20:36 ` Mark Brown
2010-10-01 6:44 ` Clemens Ladisch
2010-10-01 8:19 ` Colin Guthrie
2010-10-01 9:02 ` Clemens Ladisch
2010-10-04 11:35 ` Colin Guthrie
2010-10-04 12:26 ` Clemens Ladisch
2010-10-04 14:01 ` Takashi Iwai
2010-10-07 8:05 ` Clemens Ladisch
2010-10-08 13:21 ` Colin Guthrie
2010-10-08 13:41 ` Clemens Ladisch
2010-10-08 14:05 ` Colin Guthrie
2010-10-08 14:16 ` Colin Guthrie
2010-10-08 14:42 ` Clemens Ladisch
2010-10-08 15:25 ` Colin Guthrie
2010-10-08 15:29 ` Colin Guthrie
2010-10-08 15:49 ` Colin Guthrie
2010-10-12 8:51 ` Colin Guthrie
2010-10-15 8:32 ` Clemens Ladisch
2010-10-15 8:32 ` [PATCH 1/2] ALSA: HDA: Sigmatel: work around incorrect master muting Clemens Ladisch
2010-10-15 8:33 ` [PATCH 2/2] tlv: fix returned dB information for min-is-mute controls Clemens Ladisch
2010-10-15 8:39 ` alsactl adds volume controls? Colin Guthrie
2010-10-16 15:49 ` Colin Guthrie
2010-10-17 8:50 ` Takashi Iwai
2010-10-17 11:22 ` Colin Guthrie
2010-10-08 15:49 ` Clemens Ladisch
2010-10-11 1:34 ` Raymond Yau
2010-10-11 8:25 ` Colin Guthrie
2010-10-12 8:37 ` Raymond Yau
2010-10-17 3:39 ` Raymond Yau
2010-10-17 11:18 ` Colin Guthrie
2010-10-04 14:18 ` Alexander E. Patrakov
2010-10-04 11:09 ` Raymond Yau
2010-10-04 11:38 ` Colin Guthrie
2010-10-06 0:05 ` Raymond Yau
2010-10-06 23:29 ` Colin Guthrie
2010-10-01 5:38 ` Raymond Yau
2010-10-03 7:37 ` Raymond Yau
2010-10-23 11:51 ` Raymond Yau
2010-10-23 13:00 ` Colin Guthrie
2010-10-24 11:49 ` Raymond Yau
2010-08-29 1:35 ` Raymond Yau
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