No sound from rockpro64 audio jack.

[rahulsharma]

Hi, i am using ubuntu18LTS on my rockpro64.
uname -a
Linux rockpro64 4.4.138-1097-rockchip-ayufan-gb5128c0a1684 #1 SMP Sat Sep 29 15:08:06 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux


aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=rockchipes8316c
    rockchip,es8316-codec, 
    Default Audio Device
sysdefault:CARD=rockchipes8316c
    rockchip,es8316-codec, 
    Default Audio Device
default:CARD=rkhdmidpsound
    rk-hdmi-dp-sound, 
    Default Audio Device
sysdefault:CARD=rkhdmidpsound
    rk-hdmi-dp-sound, 
    Default Audio Device


It looks like there is audio driver but still not able to hear any sound from 3.5mm audio jack.

Also i tested with a simple flite based command line text to speech test-
flite -t hello
It throws error-
audio_open_alsa: failed to set hw parameters. Invalid argument.

As note-
mplayer test.mp3
MPlayer 1.3.0 (Debian), built with gcc-7 © 2000-2016 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing test.mp3.
libavformat version 57.83.100 (external)
Audio only file format detected.
Clip info:
Title:
Artist:
Album:
Year:
Comment: converted by convert2mp3.net
Genre: Unknown
Load subtitles in ./
==========================================================================
Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
AUDIO: 44100 Hz, 2 ch, s16le, 192.0 kbit/13.61% (ratio: 24000->176400)
Selected audio codec: [mpg123] afm: mpg123 (MPEG 1.0/2.0/2.5 layers I, II, III)
==========================================================================
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 11.2 (11.1) of 2340.0 (39:00.0) 0.7%


MPlayer interrupted by signal 2 in module: play_audio
A: 11.3 (11.2) of 2340.0 (39:00.0) 0.7%



mpv test.mp3
Playing: test.mp3
(+) Audio --aid=1 (mp3 2ch 44100Hz)
File tags:
Comment: converted by convert2mp3.net
AO: [pulse] 44100Hz stereo 2ch s16
A: 00:00:13 / 00:39:00 (0%)


Exiting... (Quit)


It seems song is being played but no sound,

Any suggetion?
Thanks