Oups...
I just found out that the command I wrote down actually work...

I have a 64 pc version and I am just not finding how to write the command because trust me I know what I am doing.
The alsamixer settings won't save that is why I want to do a startup script that will change the loopback setting but I can't figure how to write the command..

I am new to linux and I am trying to disable the loopback settings from alsamixer at each start of the system but I cant figure what is the command line to do this.
All I have been able to find is :

• amixer set 'Loopback Mixing' Disabled

But I doesn't works...
I am sure I am not putting the right command, could someone help me ?

Infos :
Command description

amixer scontents :
Simple mixer control 'Loopback Mixing',0
Capabilities: enum
Items: 'Disabled' 'Enabled'
Item0: 'Disabled'

Thank you in advance !
( - ;

@rockaddicted
I am now having another trouble...
The aslamixer settings wont save :

Is there a solution ?

@rockaddicted
Thank you very much !
You solved my problem ! ( - ;

When I start recalbox 4.1 on my PC, after some time during the booting process, it start to make a really loud and painfull sound.
I dont think it comes from the fans...
The sound starts when the "Starting lirc : OK" appears.

Here is a video of the console

Thank you all in advance !