Re^2: /dev/* and ALSA.

[peter@easthope.ca]

*	From: Ralf Mardorf ralf.mardorf@alice-dsl.net
*	Date: Mon, 03 Feb 2014 21:12:22 +0100
> [rocketmouse@archlinux ~]$ hdspmixer
> Card 0: ...
> ...

peter@dalton:~$ cat /proc/asound/cards
 0 [SI7012         ]: ICH - SiS SI7012
                      SiS SI7012 with ALC655 at irq 18
 1 [NX6000         ]: USB-Audio - MicrosoftB. LifeCam NX-6000
                      Microsoft MicrosoftB. LifeCam NX-6000 at usb-0000:00:03.3-
8, high speed
 2 [Set            ]: USB-Audio - C-Media USB Headphone Set
                      C-Media USB Headphone Set at usb-0000:00:08.0-3, full spee
d
 3 [Device         ]: USB-Audio - C-Media USB Audio Device
                      C-Media USB Audio Device at usb-0000:00:03.2-1, full speed

If card numbers are assigned randomly and the VoIP sends the ring to 
card 0, then after approximately 25% of reboots, the ring will go to 
the speakers on USB Audio.  After about 75% of reboots the ring will 
go to an inaudible device.  

> IOW you need to use
> 
> options snd slots=snd_usb_audio

That will restrict possible output devices to two. 
After approximately 50% of reboots the ring will go to 
the speakers.  Otherwise the ring will go to the headset
which I only wear a fraction of any day.  

Thanks for the information,       ... Peter E.

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