How to sound out with LINEOUT_R and LINEOUT_L?

[kimwida]

I am absolutely fool about it.
If I connect my earphone jact to LINEOUT_R and LINEOUT_L, is it possible to make sound??
( I don’t know how to wire it. I just guess.)
I succeeded to make sound with my bluetooth speaker but I want to use wired speaker.

[Darmur]

Yes, it is possible, sound quality is also quite good.

[kimwida]

Thanks.
And I connected LINEOUT_R and GND to my small speaker which I tested before.
Then “pulseaudio --start” and “mplayer 1.mp3”.
But no sound out.
What else should I do??

[jack]

I think this is related:

Audio Support Rock Pi S

I really must have hit a nerve. Actually you are the person being disrespectful but hey, I understand you just can’t do any better. Now just calm down or go troll somewhere else… Back to topic: would this be the correct place to get the kernel source? https://github.com/radxa/kernel/tree/stable-4.4-rockpis

It works with 4.4.143-27-rockchip and later kernel.

[kimwida]

I am using 4.4.143-55-rockchip.

When I use bluetooth, it can connect to pulse and make sound out.
But after turn off the bluetooth when I do “mplayer 1.mp3”, it can’t connect to [pulse] but [alsa].
And no sound out.

now it connect to pulse after “pulseaudio --start” again.
A0:[pulse] 44100hz 2ch s16le (2 byetes per sample)
But still no sound out.

[kimwida]

1. Install fresh debian. (Linux 4.4.143-55-rockchip)
2. Update debian
   #apt update, #apt upgrade
3. Install alsa-utils
   #apt install alsa-utils
4. Add /etc/asound.conf

pcm.!default {
type hw
card 1
}

ctl.!default {
type hw
card 1
}

Audio Support Rock Pi S

with a very basic /etc/asound.conf pcm.!default { type hw card 1 } ctl.!default { type hw card 1 } I was able to get some sound out of my Rock Pi S. I connected headphones to GND, PIN 25 and PIN 26… BUT: I only got sound on one ear. I switched PIN 25 and 26 and got sound on the other ear so it not broken headphones.

5. Connect LINEOUT_R and GND to small speaker
6. Install mplayer
   #apt install mplayer
7. Play a sound
   #mplayer 1.mp3
8. It is working.

I don’t know why it can’t make sound with pulseaudio but alsa.

[stuartiannaylor]

Post aplay -l

As pulse audio really lies on the top of ALSA then it most be settings, prob the index of the card you using.

Google pacmd set your defualt sink/source to the right index also.

If you follow the links from ArchLinux as thier wiki is really good you will prob find what your looking for and get a ton of correct knowledge about Linux audio.

https://wiki.archlinux.org/index.php/Sound_system