Bluetooth speaker connects to Raspberry Pi 4 but plays no sound

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SUMMARY

The discussion centers on troubleshooting audio output issues with a Bluetooth speaker connected to a Raspberry Pi 4. The user successfully paired the speaker and selected it as the audio output device, but initially experienced silence when playing media. The problem was resolved by adding the user 'pi' to the 'bluetooth' group using the command sudo usermod -a -G bluetooth pi and rebooting the device, which enabled proper audio playback.

PREREQUISITES
  • Understanding of Raspberry Pi 4 hardware and software
  • Familiarity with Bluetooth audio profiles, specifically A2DP Sink
  • Basic command line usage in Linux
  • Knowledge of user permissions and groups in Linux
NEXT STEPS
  • Research how to configure Bluetooth audio settings on Raspberry Pi 4
  • Learn about troubleshooting audio issues in Linux environments
  • Explore the use of different Bluetooth audio profiles and their configurations
  • Investigate additional audio output options for Raspberry Pi 4, such as HDMI or USB audio devices
USEFUL FOR

This discussion is beneficial for Raspberry Pi users, hobbyists setting up Bluetooth audio systems, and anyone troubleshooting audio output issues on Linux-based systems.

Swamp Thing
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  • I am able to pair my Bluetooth speaker to my Raspberry Pi 4.
  • I am able to select it as the current audio output by right clicking on the "speaker" icon, top left of desktop.
  • Under "device profiles" the speaker's profile is shown as "High Fidelity Audio (A2DP Sink)".
  • But when I play any media, the speaker is silent.
  • Each time I press the volume up (+) key on the speaker, it plays the media for a short time (a fraction of a second).

Anything I can do to troubleshoot and fix this?
 
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I haven't done anything like this before but the first thing that I would do is check to see if you have a proper driver installed on the Pi.
 
Borg said:
I haven't done anything like this before but the first thing that I would do is check to see if you have a proper driver installed on the Pi.

At least some of the driver stack is installed and working properly, because I am able to use Bluetooth earphones (2 or 3 different makes) without any problem.

I could still be missing some specific module that is needed for the speaker, though. I am googling this problem. The suggestions I found so far haven't helped.
 

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