[AI] [stereo-and-zero] No output and no input (#50)

Matt matt at audioinjector.net
Thu Feb 13 14:43:21 AEDT 2020


On 13/2/20 2:37 pm, robert crowley via People wrote:
> Ok, I don't get anything out from running that piped (input > output) 
> command.  When I run "amixer", I don't get the same type of output.  I 
> get :
>
>  $ amixer
> Simple mixer control 'Master',0
>   Capabilities: pvolume pswitch pswitch-joined
>   Playback channels: Front Left - Front Right
>   Limits: Playback 0 - 65536
>   Mono:
>   Front Left: Playback 65536 [100%] [on]
>   Front Right: Playback 65536 [100%] [on]
> Simple mixer control 'Capture',0
>   Capabilities: cvolume cswitch cswitch-joined
>   Capture channels: Front Left - Front Right
>   Limits: Capture 0 - 65536
>   Front Left: Capture 65536 [100%] [on]
>   Front Right: Capture 65536 [100%] [on]
>
> I don't get all the same information that you do from alsamixer.  I 
> also noticed that my value ranges are drastically different.  My 
> Simple mixer control looks like your Output Mixer Hifi.  Why wouldn't 
> mine show the same fields of information?
>

Yes - agreed ! hmmm ...


> BTW, I want to get this to work with "Crankshaft" which is actually 
> raspbian stretch but with the free forked version of "Open Auto" but 
> you probably know that already.  The developer of that build put in 
> support for the AudioInjector Stereo/Zero cards and at least one user 
> confirmed it working.  It's just got to be something weird with mine.  
> I didn't add anything extra.  Although earlier today I added a file 
> called /etc/asound.conf which is supposed to set the specified card to 
> default.
>
>

Can we confirm that the card is working with stock Raspbian ? Just to 
rule out hardware issues.

Matt




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