acabo de comprar estos auriculares con micro ( http://www.logitech.com/index.cfm/we.../3621&cl=us,en ) y no funcionan con mi ubuntu 9.10.
aqui os dejo informacio q puede ayudaros:

lsusb
Code:

Bus 001 Device 002: ID 05ac:8507 Apple, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 005: ID 046d:0a0c Logitech, Inc.
Bus 003 Device 003: ID 05ac:0237 Apple, Inc.
Bus 003 Device 002: ID 05ac:8242 Apple, Inc.
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 05ac:8403 Apple, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 05ac:8213 Apple, Inc.
Bus 004 Device 002: ID 0a5c:4500 Broadcom Corp.
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

dmesg:
Code:

[ 3137.270182] usb 3-1: new full speed USB device using ohci_hcd and address 5
[ 3137.512862] usb 3-1: configuration #1 chosen from 1 choice
[ 3137.536208] input: Logitech Logitech USB Headset as /devices/pci0000:00/0000:00:04.0/usb3/3-1/3-1:1.3/input/input11
[ 3137.536284] generic-usb 0003:046D:0A0C.0006: input,hidraw3: USB HID v1.00 Device [Logitech Logitech USB Headset] on usb-0000:00:04.0-1/input3

cat /proc/asound/cards
Code:

0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xd3480000 irq 23

cat /proc/asound/devices
Code:

2: : timer
3: : sequencer
4: [ 0- 1]: digital audio playback
5: [ 0- 0]: digital audio playback
6: [ 0- 0]: digital audio capture
7: [ 0- 0]: hardware dependent
8: [ 0] : control

aplay -l returns
Code:

**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: Cirrus Analog [Cirrus Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: Cirrus Digital [Cirrus Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0

la configuracio de alsamixer está bien, también he probado todas las posibles configuraciones de sistema, administracio, sonido

también los he probado en distintos programas..

es curioso que los auriculare tienen un botón para bajar el volumen y este si funciona

alguna idea?

gracias!