Subject: [linux-audio-user] multiple usb midi devices confusion
From: Atte André Jensen (atte_AT_ballbreaker.dk)
Date: Mon Dec 27 2004 - 14:21:01 EET
Hi
I got the Audiotrak MIDI-MATE and it works stright out of the box. Great!
Now the next problem is that my usb devices seem to show up different
depending on the order they are inserted and/or the physical order in
which they are connected to my usb-bus.
I have:
2 x Evolution MK-249C usb midi keyboards
1 x Audiotrak MIDI-MATE usb midi interface
1 x Edirol UA-1A usb soundcard
1 x onboard i810 soundcard
An example of the confusion:
a) I plug in the devices in this order: Evolutions, Audiotrak, Edirol
and get:
[atte_AT_aarhus ~]$ aconnect -i
client 0: 'System' [type=kernel]
0 'Timer '
1 'Announce '
client 80: 'Virtual Raw MIDI 2-0' [type=kernel]
0 'VirMIDI 2-0 '
client 81: 'Virtual Raw MIDI 2-1' [type=kernel]
0 'VirMIDI 2-1 '
client 82: 'Virtual Raw MIDI 2-2' [type=kernel]
0 'VirMIDI 2-2 '
client 83: 'Virtual Raw MIDI 2-3' [type=kernel]
0 'VirMIDI 2-3 '
client 88: 'MK-249C USB MIDI keyboard - Rawmidi 3' [type=kernel]
0 'MK-249C USB MIDI keyboard MIDI '
client 96: 'MK-249C USB MIDI keyboard - Rawmidi 4' [type=kernel]
0 'MK-249C USB MIDI keyboard MIDI '
client 104: 'XP MIDI mate - Rawmidi 5' [type=kernel]
0 'XP MIDI mate MIDI 1'
b) I plug in in this order: Edirol, Audiotrak, Evolutions and get:
[atte_AT_aarhus ~]$ aconnect -i
client 0: 'System' [type=kernel]
0 'Timer '
1 'Announce '
client 80: 'Virtual Raw MIDI 2-0' [type=kernel]
0 'VirMIDI 2-0 '
client 81: 'Virtual Raw MIDI 2-1' [type=kernel]
0 'VirMIDI 2-1 '
client 82: 'Virtual Raw MIDI 2-2' [type=kernel]
0 'VirMIDI 2-2 '
client 83: 'Virtual Raw MIDI 2-3' [type=kernel]
0 'VirMIDI 2-3 '
client 88: 'XP MIDI mate - Rawmidi 3' [type=kernel]
0 'XP MIDI mate MIDI 1'
client 96: 'MK-249C USB MIDI keyboard - Rawmidi 4' [type=kernel]
0 'MK-249C USB MIDI keyboard MIDI '
client 104: 'MK-249C USB MIDI keyboard - Rawmidi 5' [type=kernel]
0 'MK-249C USB MIDI keyboard MIDI '
c) Same physical order in the hub as b), but now I simply pull out and
reinsert the hub:
[atte_AT_aarhus ~]$ aconnect -i
client 0: 'System' [type=kernel]
0 'Timer '
1 'Announce '
client 72: 'XP MIDI mate - Rawmidi 1' [type=kernel]
0 'XP MIDI mate MIDI 1'
client 80: 'Virtual Raw MIDI 2-0' [type=kernel]
0 'VirMIDI 2-0 '
client 81: 'Virtual Raw MIDI 2-1' [type=kernel]
0 'VirMIDI 2-1 '
client 82: 'Virtual Raw MIDI 2-2' [type=kernel]
0 'VirMIDI 2-2 '
client 83: 'Virtual Raw MIDI 2-3' [type=kernel]
0 'VirMIDI 2-3 '
client 88: 'MK-249C USB MIDI keyboard - Rawmidi 3' [type=kernel]
0 'MK-249C USB MIDI keyboard MIDI '
client 96: 'MK-249C USB MIDI keyboard - Rawmidi 4' [type=kernel]
0 'MK-249C USB MIDI keyboard MIDI '
How do I control which order devices appear in? I would appreciate an
explanation that I (hopefully) understand over simply "put this in your
/etc/something".
BTW: I have looked at this before (before getting the Audiotrak) and
although I didn't understand how this list helped me out. So I have the
following (that I modified slightly after trying to solve the confusion
mentioned in this posting):
------------
[atte_AT_aarhus ~]$ more ~/.asoundrc
# i810 onboard soundcard
pcm.onboard {
type hw
card 0
device 0
}
# edirol ua-1a audio interface
pcm.usb-audio {
type hw
card 1
}
ctl.usb-audio {
type hw
card 1
}
------------------
[atte_AT_aarhus ~]$ more /etc/modutils/alsa
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
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
alias snd-card-2 snd-virmidi
alias sound-slot-2 snd-card-2
#evolution 1
alias snd-card-3 snd-usb-audio
alias sound-slot-3 snd-card-3
#evolution 2
alias snd-card-4 snd-usb-audio
alias sound-slot-4 snd-card-4
#midimate
alias snd-card-5 snd-usb-audio
alias sound-slot-5 snd-card-5
options snd-intel8x0 index=0 id=i810
options snd-usb-audio index=1,3,4,5 vid=0x0582 id=ua-1a
options snd-virmidi index=2
-------------------
Should also mention that this is on debian/unstable with kernel 2.6.9
and alsa compiled with modules:
[atte_AT_aarhus ~]$ lsmod
Module Size Used by
snd_seq_midi 6176 0
ndiswrapper 100368 0
snd_usb_audio 57696 0
snd_usb_lib 10240 1 snd_usb_audio
snd_intel8x0 27852 1
snd_ac97_codec 62160 1 snd_intel8x0
snd_pcm_oss 44456 0
snd_mixer_oss 16128 2 snd_pcm_oss
snd_pcm 78600 3 snd_usb_audio,snd_intel8x0,snd_pcm_oss
snd_page_alloc 7432 2 snd_intel8x0,snd_pcm
snd_mpu401_uart 5760 1 snd_intel8x0
snd_virmidi 3012 0
snd_seq_virmidi 5632 1 snd_virmidi
snd_rawmidi 18980 4
snd_seq_midi,snd_usb_lib,snd_mpu401_uart,snd_seq_virmidi
snd_seq_midi_event 6016 2 snd_seq_midi,snd_seq_virmidi
snd_seq 44944 3
snd_seq_midi,snd_seq_virmidi,snd_seq_midi_event
snd_timer 19972 2 snd_pcm,snd_seq
snd_seq_device 6280 3 snd_seq_midi,snd_rawmidi,snd_seq
snd 42980 13
snd_usb_audio,snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_mpu401_uart,snd_virmidi,snd_seq_virmidi,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
Thanks in advance for any help!
-- peace, love & harmony Atte
This archive was generated by hypermail 2b28 : Mon Dec 27 2004 - 14:23:37 EET