Hi Marcelo, This is a question more than an advise, but have you run # alsaconf from a konsole as su? After this proceeding, alsa mixer should work.
Kind regards,
Ciao.
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Oscar Blanco García
Ingeniero Electrónico - Universidad Nacional de Colombia
Teléfono: Casa: +57 1 687 0019
Celular: +57 3133890451
Carrera 123B # 131-66 Bloque 55 Apartamento 402
Bogotá, Colombia
