I have been strugling with trying to get my sound card working under Linux, from the command line it reports back as follows:

user@desktop:~$ sudo lspci -v | grep -A7 -i "audio"

84:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 [Oxygen HD Audio]

    Subsystem: ASUSTeK Computer Inc. Device 8521

    Flags: bus master, medium devsel, latency 64, IRQ 11

    I/O ports at f000 [size=256]

    Capabilities: [c0] Power Management version 2



user@desktop:~$ lshw -C sound

WARNING: you should run this program as super-user.

  *-multimedia UNCLAIMED  

       description: Multimedia audio controller

       product: CMI8788 [Oxygen HD Audio]

       vendor: C-Media Electronics Inc

       physical id: 4

       bus info: pci@0000:84:04.0

       version: 00

       width: 32 bits

       clock: 33MHz

       capabilities: bus_master cap_list

       configuration: latency=64 maxlatency=24 mingnt=2

       resources: ioport:f000(size=256)

  *-multimedia

       description: Audio device

       product: Barts HDMI Audio [Radeon HD 6800 Series]

       vendor: Hynix Semiconductor (Hyundai Electronics)

       physical id: 0.1

       bus info: pci@0000:85:00.1

       version: 00

       width: 64 bits

       clock: 33MHz

       capabilities: bus_master cap_list

       configuration: driver=snd_hda_intel latency=0

       resources: irq:384 memory:fbe40000-fbe43fff

Checking around a bit I find that while the system seems to recognize it, alsa does not seem to be recognizing it as an audio device. I've already tried to recompile the relevent modules and I'm still not having much luck. Also, it appears that based upon the version and kernel it should have been good to go out of the box so why it is not working is a bit of a mystery.

user@desktop:~$ cat /etc/issue

Ubuntu 12.04.1 LTS 

 l



user@desktops:~$ cat /etc/lsb-release 

DISTRIB_ID=Ubuntu

DISTRIB_RELEASE=12.04

DISTRIB_CODENAME=precise

DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS"

user@desktop:~$ uname -r

3.2.0-31-generic

user@desktop:/proc/asound$ cat version 

Advanced Linux Sound Architecture Driver Version 1.0.24.

The snd-oxygen module appears to be loading correclty and sudo modinfo snd-oxygen reports the following:

user@desktop:~$ sudo modinfo snd-oxygen

filename:       /lib/modules/3.2.0-31-generic/kernel/sound/pci/oxygen/snd-oxygen.ko

license:        GPL v2

description:    C-Media CMI8788 driver

author:         Clemens Ladisch <[email protected]>

srcversion:     396D66C73AFE20AFAF981B5

alias:          pci:v000013F6d00008788sv00007284sd00009781bc*sc*i*

alias:          pci:v000013F6d00008788sv00007284sd00009761bc*sc*i*

alias:          pci:v000013F6d00008788sv00005431sd0000017Abc*sc*i*

alias:          pci:v000013F6d00008788sv0000415Asd00005431bc*sc*i*

alias:          pci:v000013F6d00008788sv000014C3sd00001711bc*sc*i*

alias:          pci:v000013F6d00008788sv000014C3sd00001710bc*sc*i*

alias:          pci:v000013F6d00008788sv000013F6sd0000FFFFbc*sc*i*

alias:          pci:v000013F6d00008788sv000013F6sd00008782bc*sc*i*

alias:          pci:v000013F6d00008788sv00001043sd00008467bc*sc*i*

alias:          pci:v000013F6d00008788sv00001A58sd00000910bc*sc*i*

alias:          pci:v000013F6d00008788sv0000147Asd0000A017bc*sc*i*

alias:          pci:v000013F6d00008788sv000013F6sd00008788bc*sc*i*

alias:          pci:v000013F6d00008788sv000013F6sd00000010bc*sc*i*

alias:          pci:v000013F6d00008788sv000013F6sd00000001bc*sc*i*

alias:          pci:v000013F6d00008788sv000010B0sd00000219bc*sc*i*

alias:          pci:v000013F6d00008788sv000010B0sd00000218bc*sc*i*

alias:          pci:v000013F6d00008788sv000010B0sd00000217bc*sc*i*

alias:          pci:v000013F6d00008788sv000010B0sd00000216bc*sc*i*

depends:        snd-oxygen-lib,snd

intree:         Y

vermagic:       3.2.0-31-generic SMP mod_unload modversions 

parm:           index:card index (array of int)

parm:           id:ID string (array of charp)

parm:           enable:enable card (array of bool)