Mr Marvin, When I do cat /proc/asound/pcm : 00-04: Intel ICH - IEC958 : Intel 82801DB-ICH4 - IEC958 : playback 1 00-03: Intel ICH - ADC2 : Intel 82801DB-ICH4 - ADC2 : capture 1 00-02: Intel ICH - MIC2 ADC : Intel 82801DB-ICH4 - MIC2 ADC : capture 1 00-01: Intel ICH - MIC ADC : Intel 82801DB-ICH4 - MIC ADC : capture 1 00-00: Intel ICH : Intel 82801DB-ICH4 : playback 1 : capture 1 Here is my lsmod : Module Size Used by i915 23617 2 drm 66901 3 i915 ipt_MASQUERADE 6593 1 iptable_nat 9413 1 nf_nat 18285 2 ipt_MASQUERADE,iptable_nat xt_tcpudp 6849 4 bridge 46681 0 rfcomm 33233 0 l2cap 21953 9 rfcomm bluetooth 48165 4 rfcomm,l2cap autofs4 20293 2 fuse 41301 1 sunrpc 149213 3 nf_conntrack_ipv4 11589 4 iptable_nat ipt_REJECT 7361 4 iptable_filter 6337 1 ip_tables 14085 2 iptable_nat,iptable_filter nf_conntrack_ipv6 16329 1 xt_state 5953 3 nf_conntrack 51713 6 ipt_MASQUERADE,iptable_nat,nf_nat,nf_conntrack_ipv4,nf_conntrack_ipv6,xt _state ip6t_REJECT 8001 2 ip6table_filter 6209 1 ip6_tables 14981 1 ip6table_filter x_tables 14149 8 ipt_MASQUERADE,iptable_nat,xt_tcpudp,ipt_REJECT,ip_tables,xt_state,ip6t_ REJECT,ip6_tables loop 16197 0 dm_multipath 18505 0 ipv6 228357 16 nf_conntrack_ipv6,ip6t_REJECT snd_intel8x0m 16589 0 snd_intel8x0 30301 3 snd_ac97_codec 92389 2 snd_intel8x0m,snd_intel8x0 ac97_bus 5825 1 snd_ac97_codec snd_seq_dummy 6597 0 snd_seq_oss 29889 0 snd_seq_midi_event 9665 1 snd_seq_oss snd_seq 44721 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event irda 102521 0 snd_seq_device 9933 3 snd_seq_dummy,snd_seq_oss,snd_seq parport_pc 26725 0 parport 32393 1 parport_pc 8139cp 21441 0 snd_pcm_oss 37441 0 snd_mixer_oss 16577 1 snd_pcm_oss wbsd 16841 0 snd_pcm 63685 4 snd_intel8x0m,snd_intel8x0,snd_ac97_codec,snd_pcm_oss crc_ccitt 5953 1 irda 8139too 24513 0 mmc_core 44357 1 wbsd pcspkr 6465 0 snd_timer 20421 2 snd_seq,snd_pcm firewire_ohci 22597 0 mii 8257 2 8139cp,8139too snd 43333 16 snd_intel8x0m,snd_intel8x0,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_de vice,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer i2c_i801 11985 0 serio_raw 8901 0 firewire_core 34761 1 firewire_ohci soundcore 9505 1 snd crc_itu_t 5953 1 firewire_core slamr 432936 0 i2c_core 21057 1 i2c_i801 snd_page_alloc 11209 3 snd_intel8x0m,snd_intel8x0,snd_pcm iTCO_wdt 13797 0 iTCO_vendor_support 6981 1 iTCO_wdt battery 12997 0 video 19921 0 ac 8005 0 output 6721 1 video button 10321 0 joydev 12545 0 sr_mod 17381 0 sg 32209 0 cdrom 33761 1 sr_mod dm_snapshot 17765 0 dm_zero 5697 0 dm_mirror 21441 0 dm_mod 48773 9 dm_multipath,dm_snapshot,dm_zero,dm_mirror ata_piix 17861 2 ata_generic 8773 0 pata_acpi 8641 0 libata 128689 3 ata_piix,ata_generic,pata_acpi sd_mod 26689 3 scsi_mod 123341 4 sr_mod,sg,libata,sd_mod ext3 111945 2 jbd 40533 1 ext3 mbcache 10049 1 ext3 uhci_hcd 23633 0 ohci_hcd 22725 0 ehci_hcd 32333 0 When I do ls /etc/modprobe* : /etc/modprobe.conf /etc/modprobe.conf~ /etc/modprobe.d: blacklist blacklist-compat blacklist-visor floppy-pnp modprobe.conf.dist Thanks