No sound on Macmini with FreeBSD 10

[Jerry]

On Mon, 27 Jan 2014 21:56:34 +0100 (CET), Volker Nebel stated:

> Since a few days my Macmini 6.1 is running on FreeBSD 10.0 (yeah, and 
> FreeBSD alone)! Unfortunately, it does not (yet) produce any sound,
> and I really need help on this. I followed the handbook and it looks
> like, driver snd_hda is used. [CMD=" "]dmesg | grep hda[/CMD] gives
> the output shown below. Soundcard seems to be Cirrus Logic CS4206.
>     I tried the following steps:
> - Find a specific driver for this sound card: Nothing.
> - Turn volume up with [CMD=" "]mixer pcm 100 vol 100[/CMD]. Still
> nothing to hear.
> - Change the value of hw.snd.default_unit to 0,1,2. No effect.
>     Has anybody a good idea how to proceed?
>     Don't know, whether the following is relevant: [CMD=" "]kldload 
> snd_driver[/CMD] gives 6 times "ppc0: cannot reserve I/O port range".
> When booting, I get this message once.

Dumb question perhaps, but did you ever have sound working on the unit?
I had a similar situation on a PC running MS Windows. One day there was
just no sound. It turned out the sound card had burnt out.

-- 
Jerry