Article 6QJXY playing music, no sound, why no error messages

playing music, no sound, why no error messages

by
Skaperen
from LinuxQuestions.org on (#6QJXY)
for whatever reason in whatever software (maybe the kernel, maybe Pulse Audio, maybe whatever runs Bluetooth), when my Bluetooth headphones are powered off, there is no sound. of course i don't expect any in the headphones. none comes from the speakers, either (pavucontrol shows only the speakers for the output device with the volume slider grayed out at 0%).

when i run mplayer (via my own script to play playlists) to play a music file (an mp3) it proceeds to play at the correct pace. it does not stall or output any error messages. it's like it is playing sound to a resistor. the point is that the software infrastructure is running but there is no sound. my thinking is that Pulse Audio or pavucontrol is confused and not doings right.

before i got these headphones, audio sound worked, though the quality and sound level over the speakers was bad.

i just now powered on the headphones which have a female voice telling me what is happening on them:
"power on"
"pairing"
"connected"
then i start hearing the music i had mplayer play a 2nd time. it was in the middle of the music.

if someone comes into the room and powers on their own Bluetooth headphones or ear buds, will they be able to concurrently hear the same music? if not, how can i set that up?

my big interest is why mplayer was able to go through the motions of playing the music without stalling or aborting and no error message such as "Bluetooth device not functioning". anyone know how audio on Linux or Ubuntu or Xubuntu is structured and organized?
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