[Alsa-user] Two USB devices, mixer?

[Bob H. <bh...@vi...>]

-M-audio MidiSport 4x4 USB and M-audio Mobile Duo (USB)
-SuSE 9.0 Pro, (reiserfs)  KDE,  ALSA CVS from a couple weeks ago,  JACK 
0.94.0

For some reason the MidiSport always worked and I haven't killed it 
yet.    The Duo audio works too with ALSA driver snd-usb-audio.  So 
there are 2 ALSA devices with the same name...    xmms gives me some 
pops and clicks on a CD but it plays MP3s and .wav's fine.  Alsaplayer 
will play midi files but not CDs.  Jack won't connect to anything.   Of 
course I have an on-board Ensoniq AudioPCI to make things worse.  -- I 
just found out I can
=alsamixer -c 1 =
 neat tool.  If only I had some use for that device..  I only installed 
it in hopes it would help me trouble-shoot.  It has.  The  2 USB devices 
give me 'no mixer elems found'   I've read that neither have a hardware 
audio mixer, so what do I use instead?   <---  I think that's the crux 
of my question. 
Online doc for .asoundrc was light on examples.  I'll surely share my 
successes..  thanks to Jonathan Rockway and 2004-02-11 16:49.

-------------------
Here's some console output that someone might get an _aha_ from.   It 
would seem that c 0 is the MIDI controller, c 1 is the on-board, and c 2 
is the USB Audio Duo (the one I want to use for RoseGarden, Audacity, 
whatever..)

hitshed:/home/bob # ls testwave.wav
testwave.wav
hitshed:/home/bob # aplay -D hw:1,0 testwave.wav
Playing WAVE 'testwave.wav' : Signed 16 bit Little Endian, Rate 44100 
Hz, Mono
# BH-- it "played" but I didn't hear it.  The same file is sweet in xmms.

hitshed:/home/bob # aplay -D hw:0,0 testwave.wav
ALSA lib pcm_hw.c:1055:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p failed: 
No such device
aplay: main:502: audio open error: No such device
#BH--  that's the MIDI controller.  non-problem

hitshed:/home/bob # aplay -D hw:2,0 testwave.wav
Playing WAVE 'testwave.wav' : Signed 16 bit Little Endian, Rate 44100 
Hz, Mono
aplay: set_params:832: Channels count non available
#  BH--  no mixer, no channels.  you don't get JACK!  but it did get 
somewhere.  Don't know where.

--------------------
hitshed:/home/bob # lsmod | grep snd
snd-pcm-oss            49728   0  (autoclean) (unused)
snd-mixer-oss          15576   0  (autoclean) [snd-pcm-oss]
snd-seq-midi            5088   6  (autoclean)
snd-seq-midi-event      3840   0  (autoclean) [snd-seq-midi]
snd-seq                41424   7  (autoclean) [snd-seq-midi 
snd-seq-midi-event]
snd-usb-audio          48448   5
snd-ens1371            15304   1
snd-pcm                74148   0  [snd-pcm-oss snd-usb-audio snd-ens1371]
snd-timer              17024   0  [snd-seq snd-pcm]
snd-rawmidi            15968   0  [snd-seq-midi snd-usb-audio snd-ens1371]
snd-seq-device          4528   0  [snd-seq-midi snd-seq snd-rawmidi]
gameport                1692   0  [snd-ens1371]
snd-ac97-codec         45400   0  [snd-ens1371]
snd                    40388   0  [snd-pcm-oss snd-mixer-oss 
snd-seq-midi snd-seq-midi-event snd-seq snd-usb-audio snd-ens1371 
snd-pcm snd-timer snd-rawmidi snd-seq-device snd-ac97-codec]
soundcore               3940   0  [snd]
snd-page-alloc          6676   0  [snd-pcm]
usbcore                64364   1  [snd-usb-audio usbserial usb-uhci 
ehci-hcd]