FriendlyELEC-Forum

Posted: **Fri Sep 21, 2018 10:46 pm**

I have NanoPi NEO2 v1.1 LTS.

I have attached 3.5 headphone jack to LR and LL pins as in diagram http://wiki.friendlyarm.com/wiki/index. ... out-02.jpg

But when I play back audio through speaker-test and aplay, it always comes out mono.

Speaker test:

Code: Select all

speaker-test -Dsysdefault:Codec -c 2 -t wav
speaker-test 1.1.0

Playback device is sysdefault:Codec
Stream parameters are 48000Hz, S16_LE, 2 channels

says
Front Right / Front Left
and they both sound in both ears simultaneously.

I tested for short circuit by attaching another player right in parallel to my wires - the sound is stereo from the player, so there is no short circuit. Also, if I run the same test on a USB sound adapter, it works correctly and plays in stereo.

System image is FriendlyElec Ubuntu core 16.04 LTS 4.14.52 for NanoHat OLED. OLED works fine.

Is it a driver problem? I will try armbian soon, but still I wanted to check if everything is OK with the device.

Posted: **Sat Sep 22, 2018 9:00 pm**

I just tried the same speaker test on a NanoPi Duo with its Mini shield and connected headphones to 3.5 jack.

The same result - no stereo sound even on the official 3.5 minijack.

Am I missing something? Or has FriendlyElec missed the fact that their boards do not have stereo sound?

Or is everyone using USB soundcard (which seems redundant considering the in-built audio) or fancy I2S addons?

Posted: **Sun Sep 23, 2018 5:04 pm**

I ended up with Armbian - its drivers result in stereo sound.

Posted: **Thu Oct 18, 2018 3:34 am**

This worked on the Neo Core:

amixer sset 'Line Out Source' Stereo Stereo

FriendlyELEC-Forum

Cannot get stereo sound on NanoPi NEO2 v1.1 line-out pins

Cannot get stereo sound on NanoPi NEO2 v1.1 line-out pins

Re: Sound is played as mono on NanoPi NEO2 v1.1 pins

Re: Cannot get stereo sound on NanoPi NEO2 v1.1 line-out pins

Re: Cannot get stereo sound on NanoPi NEO2 v1.1 line-out pins