[alsa-devel] No sound with C-Media CMI8788

Clemens Ladisch clemens at ladisch.de
Wed Sep 2 14:23:44 CEST 2009

I wrote:
> In the file sound/pci/oxygen/oxygen_lib.c, after the line containing
> "subdevice = oxygen_read_eeprom(chip, 2);" (about line number 262),
> please add the line
>   printk(KERN_INFO "subdevice ID: %04x\n", subdevice);

I think the cause for your unknown subdevice ID is that your card does
not have an EEPROM chip.  (This is a feature, it saves you $0.25!)
In this case, adding the following lines at that place should make
the driver load correctly:

	if (subdevice == 0xffff)
		subdevice = 0x8788;


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