Re: ALSA pcm problem

[Dan Ritter <dsr@randomstring.org>]

Thomas George wrote: 
> 
> On 7/8/22 5:57 PM, Dan Ritter wrote:
> > Thomas George wrote:
> > > speaker-test fails
> > > 
> > > strace speaker-test finds "open /dev/snd/pcmC0D0" No such file or directory
> > 
> > What's the output of aplay -L ?
> > 
> > Have you tried specifiying one of those devices for
> > speaker-test?
> > 
> > Has this ever worked before? If so, when did it stop?
> > 
> My sound system worked normally until yesterday using both the onboard
> starship card and HDMI.  Then the output from the onboard card to line out
> to the external speakers failed. Still HDMI sound.
> 
> Trying to trouble shoot this I ran alsa nreset which did not report any
> problem, then tried speaker-test which failed
> 
> Here is the output of mplay -L
> 

...
> hw:CARD=Generic,DEV=0
>     HD-Audio Generic, ALCS1200A Analog
>     Direct hardware device without any conversions
> plughw:CARD=Generic,DEV=0
>     HD-Audio Generic, ALCS1200A Analog
>     Hardware device with all software conversions
> default:CARD=Generic
>     HD-Audio Generic, ALCS1200A Analog
>     Default Audio Device
> sysdefault:CARD=Generic
>     HD-Audio Generic, ALCS1200A Analog
>     Default Audio Device
> front:CARD=Generic,DEV=0
>     HD-Audio Generic, ALCS1200A Analog
>     Front output / input
> dmix:CARD=Generic,DEV=0
>     HD-Audio Generic, ALCS1200A Analog
>     Direct sample mixing device
> dmix:CARD=Generic,DEV=1
>     HD-Audio Generic, ALCS1200A Digital
>     Direct sample mixing device
...

Now try 

speaker-test -C2 -Dhw:Generic
speaker-test -C2 -Dfront:Generic

and so on to see if you get output that way.

Also check the mixing levels with alsamixer; accidental muting
happens.

-dsr-