per@desktop:/etc/init.d$ sudo lsmod |grep snd|awk {'print $1'}|xargs rmmod
ERROR: Removing 'snd_cmipci': Operation not permitted
ERROR: Removing 'snd_mpu401': Operation not permitted
ERROR: Module gameport is in use by analog,snd_cmipci
ERROR: Module snd_opl3_lib is in use by snd_cmipci
ERROR: Module snd_hwdep is in use by snd_opl3_lib
ERROR: Module snd_mpu401_uart is in use by snd_cmipci,snd_mpu401
ERROR: Module snd_rawmidi is in use by snd_mpu401_uart
ERROR: Module snd_seq_device is in use by snd_opl3_lib,snd_rawmidi
ERROR: Removing 'snd_intel8x0': Operation not permitted
ERROR: Module snd_ac97_codec is in use by snd_intel8x0
ERROR: Module snd_ac97_bus is in use by snd_ac97_codec
ERROR: Removing 'snd_pcm_oss': Operation not permitted
ERROR: Module snd_mixer_oss is in use by snd_pcm_oss
ERROR: Module snd_pcm is in use by snd_cmipci,snd_intel8x0,snd_ac97_codec,snd_pcm_oss
ERROR: Module snd_timer is in use by snd_opl3_lib,snd_pcm
ERROR: Module snd is in use by snd_cmipci,snd_mpu401,snd_opl3_lib,snd_hwdep,snd_mpu401_uart,snd_rawmidi,snd_seq_device,snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
ERROR: Module soundcore is in use by snd
ERROR: Module snd_page_alloc is in use by snd_intel8x0,snd_pcm