[SOLVED] Choppy sound using Bluetooth (Zero 2 W)

[citro]

Some more experimentation.

I bought an Orico bta-508 v5.0 UBS Bluetooth dongle - based on RTL8761B chip.

I booted a fresh install os Raspberry OS 64bit lite and disabled the integrated bluetooth:

Code:

sudo nano /boot/config

and added the dtoverlay=disable-bt line


Reboot, than I attached the dongle to RPi using a Micro USB Male to USB Female OTG Adapter / cable.

The fresh RaspOP install had no BT drivers, but the problem was solved with

Code:

sudo apt update && sudo apt upgrade -y

I added the pulseaudio and mpg123 packages, paired / connected the speaker, mounted the MP3 share from NAS, mpg123 something.mp3 and.... clear sound. Well, not 100%, but perfectly usable.

Next step: fresh MoodeAudio install (8.2.4, 64bit).
I disabled internal BT (dtoverlay=disable-bt). After reboot, I connected the USB dongle - it was recognized properly.

I tried connecting the speaker from Moode web interface, but I was only able to pair it.

I SSH-ed the unit, and tried to manually connect the speaker using bluetoothctl. I could not do it.


/var/log/syslog shows a2dp-sink profile connect failed / a2dp-source profile connect failed errors.

The only solution I found was to

Code:

sudo apt install pulseaudio-module-bluetooth

After that, I was able to connect the speaker. I only tested radio stations, there is sound output, but is unusable (worse than when using internal BT).