nforce2 digital audio output support? (or spdif support at all?)

FreeBSD Prospect mailings.freebsd at
Mon Feb 6 12:54:19 PST 2006


I was searching for more info about support for DOLBY DIGITAL pass-through to 
a digital audio output, but nothing recent came up.

This matter seems to be a serious shortage in FreeBSD, because the only 
useable info which came up on was concerning NetBSD 
(, which is in 
German language). There something of an audio-layer is mentioned.

Is it really possible, that NetBSD is ahead of FreeBSD in that particular 

I have a workstation with Asus A7N8X-deluxe motherboard, which features the 
nforce2 chipset, and has an electrial digital audio output.

On my first few tests with FreeBSD 6.0 (-RELEASE), after loading the snd_ich 
driver, I got analog sound working, but the digital output was not recognized 
and did not show up in sysctl.

Any idea, if spdif support is already in -CURRENT, and if not, if somebody is 
working on that issue?

A FreeBSD Prospect, who is actually using Gentoo Linux

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