Only noise from speakers on Teres Laptop

[Alex42]

Armbianmonitor:

http://ix.io/2gtj

Hi there,

 

I have been trying Armbian Buster for the first time. On the first look everything works fine and quick. But I cannot get proper sound from the soundcard. Instead there is only random noise.

 

Interestingly the speaker-test works fine in stereo.

 

$ uname -a
Linux teres-a64 5.4.28-sunxi64 #20.02.7 SMP Sat Mar 28 17:25:10 CET 2020 aarch64 GNU/Linux

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sun50ia64audio [sun50i-a64-audio], device 0: 1c22c00.dai-sun8i sun8i-0 [1c22c00.dai-sun8i sun8i-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ speaker-test -twav -c2 -Dhw:0

speaker-test 1.1.8

Playback device is hw:0
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 128 to 131072
Period size range from 64 to 16384
Using max buffer size 131072
Periods = 4
was set period_size = 16384
was set buffer_size = 131072
 0 - Front Left
 1 - Front Right
Time per period = 0.366860

I can imagine that the mixer channels are just mixed up or the codec are wrong but I am not sure how to debug further.

 

EDIT: The original Olimex Linux Image has working sound. So hardware should be fine. 

 

Thanks a lot!

Alex

[Alex42]

I noticed something interesting. The noise actually sound like a recording with too high gain. When I reduce the loudness to a few percent I can hear the audio. But it is then played very slow. Maybe at half speed. Any ideas where to fix that?

Edited April 14, 2020 by Alex42
typo