Subject: Re: [linux-audio-user] aplay, plughw, alsamixer question
From: Mark Knecht (markknecht_AT_comcast.net)
Date: Sat Jul 26 2003 - 08:20:15 EEST
On Fri, 2003-07-25 at 20:28, fpirrone wrote:
> Mark,
>
> I don't have any experiences with your hardware and didn't think my
> reply would be of much use to you, but running the exact command you
> post on my cs4236 system produces sound that is under control of
> alsamixer, as does -Dhw:0, so that suggests to me that aplay is directly
> affected by the settings in the mixer.
Frank,
Actually, your results are extremely helpful. Now I know this is a
bug which is a step forward. Thanks.
My hardware (HDSP 9652) is currently unsupported, but we are trying
to get it to work. I just needed verification that the command worked
the way you say. I suspected it did.
>
> Now, some cards do not have a mixer so they should not behave this way,
> as I assume would be the case if there were something wrong with the
> driver for a card that does have a mixer. In either event I would not
> expect to see controls in amixer or the gamix graphical interface. If
> you see them and they have no effect that sounds like a malfunction.
>
> Couldn't find any answer to your channel question. My system does not
> seem to provide a relevant option to explore this further. I fooled
> around with -c and -I options but could draw no useful conclusions.
May I ask what hardware you are using, and if you attempted to use (or
could you try out?) both mono and stereo wave files? I am curious
whether for you a mono wave file would be played on all channels, as my
driver is currently doing, or just channel 1, and whether a stereo file
is played as mono or in stereo.
Anyway, your response was exactly what I was hoping for. Thanks much
for verifying this.
Cheers,
Mark
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