USB audio

[toyfactory]

After booting up the device is not listed by lsusb, however if I unplug
and replug it shows up.

Here's the output from cat /var/log/kern.log | grep -i audio at boot
time:

Mar  2 15:28:26 localhost kernel: usbaudio: device 4 audiocontrol
interface 0 has 1 input and 1 output AudioStreaming interfaces
Mar  2 15:28:26 localhost kernel: usbaudio: device 4 interface 2
altsetting 1 unsupported channels 4 framesize 2
Mar  2 15:28:26 localhost kernel: usbaudio: device 4 interface 1
altsetting 1 unsupported channels 4 framesize 2
Mar  2 15:28:26 localhost kernel: usbaudio: constructing mixer for
Terminal 8 type 0x0301
Mar  2 15:28:26 localhost kernel: usbaudio: mixer request device 4 if 0
unit 4 ch 1 selector 2 failed
Mar  2 15:28:26 localhost kernel: usbaudio: mixer request device 4 if 0
unit 2 ch 1 selector 2 failed
Mar  2 15:28:26 localhost kernel: usbaudio: mixer request device 4 if 0
unit 7 ch 1 selector 2 failed
Mar  2 15:28:26 localhost kernel: usbaudio: no mixer controls found for
Terminal 8
Mar  2 15:28:26 localhost kernel: usbaudio: constructing mixer for
Terminal 12 type 0x0101
Mar  2 15:28:26 localhost kernel: usbaudio: mixer request device 4 if 0
unit 10 ch 1 selector 2 failed
Mar  2 15:28:26 localhost kernel: usbaudio: unit 11 invalid MIXER_UNIT
descriptor (bitmap too small)
Mar  2 15:28:26 localhost kernel: usbaudio: no mixer controls found for
Terminal 12
Mar  2 15:28:26 localhost kernel: usbcore: registered new driver audio
Mar  2 15:28:26 localhost kernel: drivers/usb/class/audio.c: v1.0.0:USB
Audio Class driver
Mar  2 15:28:26 localhost kernel: snd-usb-audio: probe of 1-3:1.0 failed
with error -5
Mar  2 15:28:26 localhost kernel: usbcore: registered new driver
snd-usb-audio

So there are some errors there, but the driver seems to get loaded.

Here's the output after I unplug and replug:

Mar  2 15:32:27 localhost kernel: usbaudio: device 8 audiocontrol
interface 0 has 1 input and 1 output AudioStreaming interfaces
Mar  2 15:32:27 localhost kernel: usbaudio: device 8 interface 2
altsetting 1 unsupported channels 4 framesize 2
Mar  2 15:32:27 localhost kernel: usbaudio: device 8 interface 1
altsetting 1 unsupported channels 4 framesize 2
Mar  2 15:32:27 localhost kernel: usbaudio: constructing mixer for
Terminal 8 type 0x0301
Mar  2 15:32:27 localhost kernel: usbaudio: registered mixer 14,16
Mar  2 15:32:27 localhost kernel: usbaudio: constructing mixer for
Terminal 12 type 0x0101
Mar  2 15:32:27 localhost kernel: usbaudio: unit 11 invalid MIXER_UNIT
descriptor (bitmap too small)
Mar  2 15:32:27 localhost kernel: usbaudio: registered mixer 14,32
Mar  2 15:32:27 localhost kernel: usb_audio_parsecontrol:
usb_audio_state at ee83d8c0
Mar  2 15:32:28 localhost kernel: hiddev96: USB HID v1.00 Device
[AUDIOTRAK MAYA44 USB] on usb-0000:00:02.0-3

I've had a look at this page, which mentions adding entries to
/etc/modules.conf, I've tried following the instructions and running
update-modules without success.

http://www.alsa-project.org/alsa-doc/doc-php/template.php?company=USB&card=Generic&chip=Generic&module=usb-audio

Not sure what the problem is.

Nick