[pulseaudio-discuss] Sound input problem on chtrt5645 device.

[Gustavo Duarte]

Hi all,

The input sound isn't working. No sound is detected.

Environment:

Laptop brand: JP Couto model EF20EA

Distributor ID: Ubuntu
Description: Ubuntu 16.04.4 LTS
Release: 16.04
Codename: xenial

Linux Kernel: 4.15.0-23-generic

Right after install Ubuntu 16.04 on the laptop, the sound output and input
isn't worked.

So i followed this procedure:
https://ubuntuforums.org/showthread.php?t=2374383&p=13698722#post13698722
and then, output sound starting to work, but input not.

An strange thing is that output of amixer -cO is empty.

I attach, pact list output.

Somebody would give me a clue to fix it ?

Thanks in advance.

Gustavo.

[Tanu Kaskinen]

Post by Gustavo Duarte
Hi all,
The input sound isn't working. No sound is detected.
Laptop brand: JP Couto model EF20EA
Distributor ID: Ubuntu
Description: Ubuntu 16.04.4 LTS
Release: 16.04
Codename: xenial
Linux Kernel: 4.15.0-23-generic
Right after install Ubuntu 16.04 on the laptop, the sound output and input
isn't worked.
https://ubuntuforums.org/showthread.php?t=2374383&p=13698722#post13698722
and then, output sound starting to work, but input not.
An strange thing is that output of amixer -cO is empty.

On your machine card 0 is HDMI, which is why amixer -c0 is empty.
amixer -c1 will show the chtrt5645 mixer settings.

There have been input related fixes to chtrt5645's UCM config recently.
This is the latest version:
http://git.alsa-project.org/?p=alsa-lib.git;a=blob_plain;f=src/conf/ucm/chtrt5645/HiFi.conf;hb=HEAD

Try copying that to /usr/share/alsa/ucm/chtrt5645/HiFi.conf