Re: Unsetting PCM Definitions

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On 10/20/2015 01:03 AM, Clemens Ladisch wrote:
> These devices do not exist in your list.  This is a bug in PortAudio; it
> tries to open a fixed list of device names, and does not suppress error
> messages.

Ah!  So these devices would sit unused(/undefined) if PortAudio wasn't
trying to use them "on demand"?

> Try something like this:
> 
>   pcm.!surround51 = does_not_exist;

Applying (re)definitions of this kind does indeed prune down the list.
Using the listaudevs again with the new asound.conf:
"
$ listaudevs
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM does_not_exist
Device	Input	Output	Name
 0	2	2	HDA Intel PCH: VT1802 Analog (hw:0,0)
 1	0	8	HDA Intel PCH: HDMI 0 (hw:0,3)
 2	128	128	sysdefault
 7	0	8	hdmi
 8	0	128	main
 9	0	2	dmix
*10	0	128	default
"

But you are saying that because of PortAudio, there's no way to suppress
these messages, nor undefine these definitions outside of striking lines
out of /usr/share/alsa/alsa.conf?  Is that correct?

With Thanks,
\\ Arthur

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