Error No such device on PI4 Buster

bablokb / pi-btaudio

Bluetooth Audio for headless Raspbian systems

GNU General Public License v3.0

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Error No such device on PI4 Buster #3

Closed ArJay60 closed 4 years ago

ArJay60 commented 4 years ago

Is this also working on PI4 with Buster? Do get error: ALSA lib bluealsa-pcm.c:763:(_snd_pcm_bluealsa_open) Couldn't get BlueALSA PCM: PCM not found aplay: main:828: audio open error: No such device

bablokb commented 4 years ago

please verify that blue-alsa is up and running

ArJay60 commented 4 years ago

bluealsa is running: ps -ef | grep blue -->

root 473 1 0 20:09 ? 00:00:00 /usr/lib/bluetooth/bluetoothd root 477 1 0 20:09 ? 00:00:00 /usr/bin/bluealsa

Any idea?

ps. There is an error in your instruction for installing: git clone https://github.com/bablokb/pi-bt-audio.git should be: git clone https://github.com/bablokb/pi-btaudio.git

bablokb commented 4 years ago

I could reproduce your error in two circumstances:

after fiddeling around with one of the bluetooth-services, e.g. bluetooth.service, bluealsa.service, bthelper@.service. The error was fixed after a reboot.
the BT-speaker was not connected

Otherwise, this works with Pi4 on Buster. Having said this, I did not manage to make it work with any user except root. aplay or mpg123 just happily pretend to play without any error message, but no sound. No idea what is going on here, but other users have reported the same problem.

ps: I fixed the instructions - thanks for the hint

Bernhard

ArJay60 commented 4 years ago

Problem is more or less solved. I can get it working but the BT disconnects after a short time. If I actively use it even earlier. A problem PI4 seems to have more often. So the problem is BT speaker not connected. I can use aplay as user pi after adding pi to the bluetooth group. Maybe you can confirm?