[linux-audio-user] alsa setup

[Frank Barknecht]

Hallo,
Atte André Jensen hat gesagt: // Atte André Jensen wrote:

> I'm confused about how to setup alsa. Originally I managed to get things 
> working, but after buying an usb sound card, I'm even so confused that 
> I'm not exactly sure what to ask, but I'll try.
> 
> I run debian/unstable on a laptop with my own 2.6.4 kernel and alsa 1.0. 
>  I have the following hardware that I believe to be related to alsa:
> 
> *Onboard i810 soundcard
> *USB Edirol UA-1A sound card
> *4 port usb hub
> *2 evolution usb-keyboards connected to the hub
> *I need one virtual midi port for each keyboard, so 2 for now

There is an option to the usb-audio modules which lets you specify,
which one should get wich card number. For that you need to specify
Vendor and/or product ids and also the "index" option to tell
snd-usb-audio, which device you be at which card position. 

Here's some old info I found, which you could try: 
http://www.geocrawler.com/mail/msg_raw.php3?msg_id=10163242

There are some errors in your config as well. 
 
> alias char-major-116 snd
> alias char-major-14 soundcore
> 
> # i810
> alias sound-service-0-0 snd-mixer-oss
> alias sound-service-0-1 snd-seq-oss
> alias sound-service-0-3 snd-pcm-oss
> alias sound-service-0-8 snd-seq-oss
> alias sound-service-0-12 snd-pcm-oss
> alias snd-card-0 snd-intel8x0
> alias sound-slot-0 snd-card-0
> 
> # ua-1a
> alias sound-service-1-0 snd-mixer-oss

You don't need the following line: 
> alias sound-service-1-1 snd-seq-oss
Just delete it. 

> alias sound-service-1-3 snd-pcm-oss
> alias sound-service-1-8 snd-seq-oss
> alias sound-service-1-12 snd-pcm-oss
> alias snd-card-1 snd-usb-audio
> alias sound-slot-1 snd-card-1
> 
> # virtual midi 1
> alias snd-card-2 snd-virmidi
> alias sound-slot-2 snd-card-2
> 
> # virtual midi 2
> alias snd-card-3 snd-virmidi
> alias sound-slot-3 snd-card-3
> 
> #evolution 1
> alias snd-card-4 snd-usb-midi

There is no snd-usb-midi module anymore. You need to use
snd-usb-audio, but you already loaded that above, so you need that
"vid"-trick, that should be explained somewhere in the archives.

This is from the INSTALL file: 

Module snd-usb-audio.o
----------------------

Module for USB audio and USB MIDI devices.

vid             - Vendor ID for the device (optional)
pid             - Product ID for the device (optional)

This would configure one slecial USB device as the second card
(index=1): 

options snd-usb-audio vid=0x763 pid=0x1001 index=1

And I found this on the net for configuring two usb cards with fixed
indexes: 

options snd-usb-audio index=1,2 vid=0x0763,0x0582 pid=0x1110,0x0005

> alias sound-slot-5 snd-card-5
> 
> #evolution 2
> alias snd-card-5 snd-usb-midi

See above. Same error.
> alias sound-slot-5 snd-card-5


Ciao
-- 
 Frank Barknecht                               _ ______footils.org__