Intel Mac Mini Audio does not work

["Jóhann B. Guðmundsson"]

On 10/21/2009 03:12 PM, Tom "spot" Callaway wrote:
> On 10/21/2009 10:10 AM, "Jóhann B. Guðmundsson" wrote:
>
>   
>> Did you get a sound from the rear jack? 
>>     
> This mac mini has two rear analog jacks, one marked as input, one marked
> as output "headphones". I currently have outputs plugged into both
> ports, but I have yet to get any sound from either one.
>
> This is exactly how it looks:
>
> http://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Mac_mini_opening.jpg/800px-Mac_mini_opening.jpg
>
>   
>> Smoltprofile please ;)
>>     
> http://www.smolts.org/client/show/?uuid=pub_6cf87e28-1e73-4453-8fe4-98d3cadfe316
>   


Ah-ha just what I thought chipset 82801G :)  Known to be badly wired by
hardware manufacturers. On the macmini the linux kernel used to send the
output to the line in so plug into that :)

cat /proc/asound/card0/codec#* | grep Codec

Let's asume that you get STAC9220/9221

/usr/share/doc/kernel-doc-<version>/Documentation/sound/alsa/HD-Audio-Models.txt

STAC9220/9221
=============
  ref           Reference board
  3stack        D945 3stack
  5stack        D945 5stack + SPDIF
  intel-mac-v1  Intel Mac Type 1
  intel-mac-v2  Intel Mac Type 2
  intel-mac-v3  Intel Mac Type 3
  intel-mac-v4  Intel Mac Type 4
  intel-mac-v5  Intel Mac Type 5
  intel-mac-auto Intel Mac (detect type according to subsystem id)
  macmini       Intel Mac Mini (equivalent with type 3)
  macbook       Intel Mac Book (eq. type 5)
  macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
  macbook-pro   Intel Mac Book Pro 2nd generation (eq. type 3)
  imac-intel    Intel iMac (eq. type 2)
  imac-intel-20 Intel iMac (newer version) (eq. type 3)
  ecs202        ECS/PC chips
  dell-d81      Dell (unknown)
  dell-d82      Dell (unknown)
  dell-m81      Dell (unknown)
  dell-m82      Dell XPS M1210
  auto          BIOS setup (default)

And since this white little box contains the Atheros Communications,
Inc. AR242x 802.11abg Wireless PCI Express Adapter
<http://www.smolts.org/reports/view_device/AR242x%20802.11abg%20Wireless%20PCI%20Express%20Adapter>
it's an 2006 macmini which means version 1 or 2 I think first try it
with the /etc/modprobe.d/alsa-base.conf  ( if none then none ) and make
sure nothing is blocking line in since the audio might be passed out
that way ;)  alsamixer -c0 and to monitor pulseaudio output kill
pulseaudio ( pulseaudio -k ) and start it verbosly ( pulseaudio -vvvvv 
) If nothing ( without out any extra alsa tweaking put options
snd-hda-intel model=intel-mac-v1 ( or 2 or auto )
/etc/modprobe.d/alsa-base.conf and repeat :)

JBG 
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