Re: Names for ALSA controls

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At Thu, 12 Jun 2008 11:58:19 +0200,
Juergen Beisert wrote:
> 
> Hi,
> 
> when I register these mixer controls:
> 
> Line Playback Switch
> Line Playback Route
> Mono Playback Switch
> Mono Playback Route
> Phone Playback Switch
> Phone Playback Route
> Headphone Playback Switch
> Headphone Playback Route
> PCM Playback Switch
> PCM Playback Volume
> Line Bypass Capture Switch
> Line Bypass Capture Volume
> ADC Capture Route
> 
> Running "alsamixer" fails with:
> 
>  ALSA lib simple_none.c:1218:(simple_add1) helem (MIXER,'Headphone Playback Switch',0,0,0) appears twice or more
> 
> It seems there are restrictions what kind of control name I can use for each
> control, but what restrictions? Are there better names for my output
> amplifiers? Each of it I can enable/disable (-> Switch) and select a source
> (-> Route) independently.

You can use "xxx Source" instead of "xxx Route", I guess, as a
workaround.


Takashi
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