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http://www.alsa-project.org/db/?f=5e7f45089ce82985c003fa2608bed82726ebbdf6

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how many audio jacks do your macmini have ?

seem only line in support jack detect, internal mic support balanced but ext mic does not support jack detect

There are two audio jacks:

1. An analogue headset/external speakers jack. Note that in order for the

external speakers to work, I need to use HDA Analyser to change the settings otherwise things remain stuck on the internal speaker. I did not try an analogue headset.

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/892697

2. An analogue line-in jack. I tried this with a powered condenser

microphone - I can hear a recording, but the level is too low for practical use.

I'm not sure there is an internal microphone connected - shouting at the

mac mini box does not produce an audible recording :P

http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=commitdiff;h=6df...

Advanced information - PCI Vendor/Device/Subsystem ID's !!-------------------------------------------------------

00:1b.0 0403: 8086:1c20 (rev 05) Subsystem: 8086:7270

your macmini pci subsystem is also 8086:7270 which is same as imac27

the pin default of your macmini (init_pin_config) is replaced by the pin config of model imac27 (driver_pin_config)

Codec: Cirrus Logic CS4206 Address: 0 AFG Function Id: 0x1 (unsol 0) Vendor Id: 0x10134206 Subsystem Id: 0x106b2100

is the subsystem id in codec unique ?

Sysfs Files !!-----------

/sys/class/sound/hwC0D0/init_pin_configs: 0x09 0x400000f0 0x0a 0x002b4040 0x0b 0x90100130 0x0c 0x018b3020 0x0d 0x90a00110 0x0e 0x400000f0 0x0f 0x01cbe030 0x10 0x014be060 0x12 0x01ab9070 0x15 0x400000f0

/sys/class/sound/hwC0D0/driver_pin_configs: 0x09 0x012b4050 0x0a 0x90100140 0x0b 0x90100142 0x0c 0x018b3020 0x0d 0x90a00110 0x0e 0x400000f0 0x0f 0x01cbe030 0x10 0x014be060 0x12 0x01ab9070 0x15 0x400000f0

/sys/class/sound/hwC0D0/user_pin_configs:

/sys/class/sound/hwC0D0/init_verbs: