[root@localhost etc]# rmmod snd_hda_intel snd_hda_codec snd_pcm snd_timer snd snd_page_alloc
ERROR: Module snd_hda_intel is in use
ERROR: Module snd_hda_codec does not exist in /proc/modules
ERROR: Module snd_pcm is in use by snd_intel8x0,snd_ac97_codec,snd_usb_audio,snd_hda_intel,snd_pcm_oss
ERROR: Module snd_timer is in use by snd_seq,snd_pcm
ERROR: Module snd is in use by snd_intel8x0,snd_ac97_codec,snd_usb_audio,snd_rawmidi,snd_hwdep,snd_hda_intel,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
ERROR: Module snd_page_alloc is in use by snd_intel8x0,snd_hda_intel,snd_pcm
[root@localhost etc]#