Hi, i have an imac 12,2 (2011) and i had to change GPIO with hda_analyzer to get some sound on line out.
Jérémy.
On 22/10/2011 14:14, John Frankish wrote:
I posted this to the alsa-user list a couple of weeks ago but did not get an answer
I've been trying to get analog line out to work to headphones or powered speakers with the latest Mac Mini, but so far the best I've managed to achieve is to get the internal speaker to work. Line out works with the Mac OS.
I've also tried the HDA analyser mentioned here:
http://www.alsa-project.org/main/index.php/HDA_Analyzer
but no matter what I do, there is no way to get sound from the line out jack to headphones or powered speakers.
I'm guessing I need one or more obscure options to load the module snd-hda-intel, but nothing I've tried so far has worked. The kernel documentation does not mention the mac mini 5,3 the Intel Corporation 6 Series/C200 Series Chipset nor the combination of Cirrus Logic CS4206 and Intel CougarPoint HDMI - does anybody know where I might find more details?
Details below:
DMI: Apple Inc. Macmini5,3/Mac-7BA5B2794B2CDB12, BIOS MM51.88Z.0075.B00.1106271442 06/27/2011 Alsa modules from linux-3.0.3 Alsa-1.0.23
$ lspci -knn 00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086:1c20] (rev 05) Subsystem: Intel Corporation Device [8086:7270] Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel
$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: Cirrus Analog [Cirrus Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 1: Cirrus Digital [Cirrus Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0
$ head -n 1 /proc/asound/card0/codec* ==> /proc/asound/card0/codec#0 <== Codec: Cirrus Logic CS4206 ==> /proc/asound/card0/codec#3 <== Codec: Intel CougarPoint HDMI
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