Setting up 4.1 audio in FreeBSD 10.1

[Luciano Rottava da Silva]

Hi Bernt,

Sound is coming out from front speakers, so pcm0 is the right default unit.

Problem is that rear speakers are mute. That´s why I am playing with pin
configuration of the sound card.

Besides, during some of these tests with "nid", mouse stopped working in X!

Anyone experienced this as well?

Cheers.

On 11 December 2014 at 10:52, Bernt Hansson <bah at bananmonarki.se> wrote:

> On 2014-12-11 00:26, Luciano Rottava da Silva wrote:
>
>> Hello list,
>>
>
> Hello.
>
>
>  My desktop has a 4.1 speaker system, connect to an Asus motherboard with a
>> built-in ALC887 sound card.
>>
>> $ dmesg | grep ALC
>> hdacc0: <Realtek ALC887 HDA CODEC> at cad 0 on hdac0
>> hdaa0: <Realtek ALC887 Audio Function Group> at nid 1 on hdacc0
>> pcm0: <Realtek ALC887 (Rear Analog 3.1/2.0)> at nid 20,26 and 24 on hdaa0
>> pcm1: <Realtek ALC887 (Front Analog)> at nid 27 and 25 on hdaa0
>> pcm2: <Realtek ALC887 (Onboard Digital)> at nid 17 on hdaa0
>>
>> I am able to listen to the front but not to the rear speakers. I would
>> like
>> to adjust my audio system to 4.0/4.1, i.e., same audio in the rear and in
>> the front speaker. Don`t care too much about real surround sound.
>>
>> All relevant sound modules are there, so I think problem is related to the
>> configuration of the sound chipset.
>>
>> Searching in the Internet I figured out I could redefine a line-in jack
>> (blue, where my rear speakers are connected) to line-out. So I did it:
>>
>> $ cat /boot/device.hints
>> hint.hdac.0.cad0.nid20.config="as=1 seq=0"
>> #hint.hdac.0.cad0.nid24.config="as=1 seq=1 device=Line-out"
>> #hint.hdac.0.cad0.nid26.config="as=1 seq=2 device=Line-out"
>> hint.hdac.0.cad0.nid26.config="as=1 seq=1 device=Line-out"
>>
>>
>> $ cat /dev/sndstat
>> Installed devices:
>> pcm0: <Realtek ALC887 (Rear Analog 3.1/2.0)> (play/rec) default
>> pcm1: <Realtek ALC887 (Front Analog)> (play/rec)
>> pcm2: <Realtek ALC887 (Onboard Digital)> (play)
>> pcm3: <USB audio> (rec)
>>
>>
>> After boot in verbose mode I got:
>>
>> hdaa0: Pin sense: nid=20 sense=0x80000000 (connected)
>> hdaa0: Pin sense: nid=26 sense=0x80000000 (connected)
>> hdaa0: FG config/quirks: forcestereo ivref50 ivref80 ivref100 ivref
>> pcm0: <Realtek ALC887 (Rear Analog 3.1/2.0)> at nid 20,26 and 24 on hdaa0
>> pcm0: Playback:
>> pcm0:      Stream cap: 0x00000001 PCM
>> pcm0:         PCM cap: 0x000e0560 16 20 24 bits, 44 48 96 192 KHz
>> pcm0:             DAC: 2 3
>> pcm0:
>> pcm0:     nid=20 [pin: Line-out (Green Jack)]
>> pcm0:       + <- nid=12 [audio mixer] [src: pcm, mix]
>> pcm0:              + <- nid=2 [audio output] [src: pcm]
>> pcm0:              + <- nid=11 [audio mixer] [src: mix]
>> pcm0:
>> pcm0:     nid=26 [pin: Line-out (Blue Jack)]
>> pcm0:       + <- nid=13 [audio mixer] [src: pcm, mix]
>> pcm0:              + <- nid=3 [audio output] [src: pcm]
>> pcm0:              + <- nid=11 [audio mixer] [src: mix]
>> pcm0:
>>
>>
>> This means that both jacks in the motherboard are set to line-out and
>> shoud
>> work, right?
>>
>> Is there anything else I should set, maybe mixer in order to have a
>> 4.0/4.1
>> audio system?
>>
>> Any ideas?
>>
>  You can always fiddle with sysctl hw.snd.default_unit 0-3
> And see what happens.
>