CentOS 6 up-to-date 2.6.32-573.8.1.el6.x86_64 Gigabyte GA-Z68P-DS3 on-board audio BIOS disabled. Intel I5 Pny 550Ti video Envy 24HT pci audio module I want to use the fiber in/out of the audio card, but it is not listed in System/Preferences/Sound/Hardware, only the HDMI is available. It was installed in the pci slot when the system CentOS 6.0 was installed. I have searched all over Google, but can't find a solution. Does anyone have a solution for this problem ? Advice will be appreciated. thanks in advance! [mumbles at 120db ~]$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 [mumbles at 120db ~]$ lspci | grep -i audio 01:00.1 Audio device: NVIDIA Corporation GF116 High Definition Audio Controller (rev a1) 05:00.0 Multimedia audio controller: VIA Technologies Inc. VT1720/24 [Envy24PT/HT] PCI Multi-Channel Audio Controller (rev 01) [mumbles at 120db ~]$ lspci -k <snip> <snip> 01:00.1 Audio device: NVIDIA Corporation GF116 High Definition Audio Controller (rev a1) Subsystem: Device 196e:089c Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel <snip> <snip> 05:00.0 Multimedia audio controller: VIA Technologies Inc. VT1720/24 [Envy24PT/HT] PCI Multi-Channel Audio Controller (rev 01) Subsystem: VIA Technologies Inc. Albatron PX865PE 7.1 Kernel modules: snd-ice1724 [mumbles at 120db ~]$ lspci -n | grep 05:00.0 05:00.0 0401: 1412:1724 (rev 01) [mumbles at 120db ~]$ grep 1724 /lib/modules/$(uname -r)/modules.pcimap snd-ice1724 0x00001412 0x00001724 0xffffffff 0xffffffff 0x00000000 0x00000000 0x0 [mumbles at 120db ~]$ modinfo snd-ice1724 filename: /lib/modules/2.6.32-573.8.1.el6.x86_64/kernel/sound/pci/ice1712/snd-ice1724.ko license: GPL description: VIA ICEnsemble ICE1724/1720 (Envy24HT/PT) author: Jaroslav Kysela <perex at perex.cz> srcversion: 4159E44B9111EFB98548209 alias: pci:v00001412d00001724sv*sd*bc*sc*i* depends: snd,snd-ac97-codec,snd-pcm,snd-i2c,snd-ice17xx-ak4xxx,snd-rawmidi,snd-pt2258,snd-ak4xxx-adda,snd-ak4114 vermagic: 2.6.32-573.8.1.el6.x86_64 SMP mod_unload modversions parm: index:Index value for ICE1724 soundcard. (array of int) parm: id:ID string for ICE1724 soundcard. (array of charp) parm: enable:Enable ICE1724 soundcard. (array of bool) parm: model:Use the given board model. (array of charp)