Enable audio output/input with USB sound card dongle on Amlogic Tv Boxes

[Pita Bread]

I have installed Armbian community images several times on different tv boxes that have an Amlogic S905x3, and usually there was no sound ♫. I wanted to get sound out of the tv box. So, I purchased a generic USB sound card audio dongle from Aliexpress for about $2 to $3 USD. (see attached photo). The USB audio device is described in Linux as a Texas Instruments PCM2902 Audio Codec (USB PnP Sound Device device 0 USB Audio), and when you run the command lsusb you will see the id numbers 08bb:2902.  However, the specific hardware chip in the device that you receive may be different. I updated the databases for repositories by running sudo apt update -y and installed necessary packages to support the USB audio device and to use a graphical desktop such as XFCE4, for example:

 

sudo apt install -y smplayer alsa-base alsa-oss alsa-tools alsa-utils alsamixergui pulseaudio pavucontrol pavumeter

 

You can use smplayer or vlc or another as long as it is modern media player or audio player. Now make a backup copy of these two text files /etc/modules and /etc/modprobe.d/alsa-base.conf and save the backup copies in your home directory.

 

Without quotes, edit the text file /etc/modules and write “snd-usb-audio” at the end of the file. Also, edit the text file /etc/modprobe.d/alsa-base.conf and change a few things.

 

Put a hash # symbol in front of every “options snd-usb-audio index=-2” that you see in the file /etc/modprobe.d/alsa-base.conf . I found two of them. Add these two lines of text to the bottom of /etc/modprobe.d/alsa-base.conf without quotes.

"alias snd-card-0 snd-usb-audio"

"options snd-usb-audio index=0"

 

Make sure that your user is in the 'audio' group. Run the usermod command against a regular user (not root) that you want to use often. And reboot.

sudo usermod -a G audio {username here}

sudo reboot 

 

Login to the graphical desktop, open the volume control program by clicking on the panel Applications, Multimedia, PulseAudio Volume Control. Click the Configuration tab at the far right of the volume control program and change the profile to Analog Stereo. * Important – now connect a headset, earphone, or amplifier to the 3.5mm (⅛’’) 🎧 headphone receptacle on the USB audio dongle and play some sounds, music or youtube. You can use wav audio files in the directory /usr/share/sounds/alsa/ if you don't have an internet connection.

 

 

Edited 5 hours ago by Pita Bread
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