Error trying to play an audio file in jetson nano connected to a bluetooth speaker

Autonomous Machines Jetson & Embedded Systems Jetson Nano
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#1

hi, i am trying to fix the audio issue in jetson nano from past one week and i am unable to find suitable solution for it anywhere.

i have connected a bluetooth speaker to jetson nano but this is seen as “headset” in the audio icon. so, my issue is that i am running an audio file(.wav file) in a python script if certain function is executed like enclosed below. THE AUDIO PLAYS ABSOULTELY FINE WHEN RUN MANUALLY ON TERMINAL USING “PYTHON3 abcd.py”. but this exact file is made into a executable file using pyinstaller and ran in systemd services. the executable file ./abcd file also plays the audio and the event also executes but only the audio does not play in systemd services.

from pygame import mixer
mixer.init()
mixer.music.load( "/home/sid/song/song.wav" )
if (some_event):
mixer.music.play()

audio is 5sec long and .wav format.
my service file looks like this

[Unit]
Description = SIDD
After=local-fs.target
ConditionPathExists=/opt/SIDD/bin

[Service]
ExecStart=/opt/SIDD/bin/SIDD.sh
Restart=no
Type=simple
StandardOutput=journal+console

[Install]
WantedBy=multi-user.target

i did follow the below link to enable audio on my speaker but no luck with respect to service. https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide%2Fasoc_driver.18.2.html%23wwpID0E0AV0HA
Should i be adding a audio path anywhere or change audio/bluetooth config file?

#4

Hi,

I don’t think this issue has anything to do with bluetooth. Issue seems related to systemd.
Is your python script able to work as root?

#5

hi,
yeah my python script works absolutely fine in sudo. i am unable to figure out any errors in systemd.
How can i fix this?

#6

Have you tried other startup tool from ubuntu like rc.local?

#7

Hi,
Here is a reference post of setting rc.local:

FYR.

Running gstreamer from Service
#8