Help with USB audio card

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Hi all.

I just bought an external USB audio card.  I plugged it into the USB port of my
PC and plugged a 3.5mm jack microphone into the `mic' input of the card.  It is
shown in lsusb:

$ lsusb
Bus 002 Device 005: ID 17ef:602e Lenovo 
Bus 002 Device 003: ID 046d:c312 Logitech, Inc. DeLuxe 250 Keyboard
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 010: ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controlle
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


and also in arecord:

$ arecord --list-devices
**** List of CAPTURE Hardware Devices ****
card 1: Generic [HD-Audio Generic], device 0: ALC662 rev3 Analog [ALC662 rev3 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 2: ALC662 rev3 Alt Analog [ALC662 rev3 Alt Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Besides, I ran alsamixer, selected the USB card and unmuted everything.  But
then, when I try to record, no sound is recorded.  I do:

 $ sox -t alsa hw:2,0 output.wav

, or

 $ arecord -f S16_LE -D hw:2,0 -r 96000 test.wav

, or also within Audacity.  But nothing, my voice is not recorded.  Please help
whoever can.

Thanks,

Rodolfo