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If I boot my Pi 3b+ with the HDMI cord plugged in then my audio sounds fine. However, if I want to run it headless and I boot the device without the HDMI plug then the audio is very slow and distorted. It still plays (through the headphone jack) but it sounds terrible. Then if I plug in my HDMI cable and reboot it sounds perfect.

How? Why?

3
  • Where the speakers are connected?
    – Ingo
    Apr 29 '20 at 10:33
  • The speakers are plugged into the headphone jack.
    – J Allen
    Apr 29 '20 at 15:09
  • Is there a way to restart the audio service? It's like the playback speed is dramatically reduced - maybe there's a way to set the playback speed?
    – J Allen
    May 4 '20 at 17:14
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sudo nano /boot/config.txt

uncomment the "hdmi_force_hotplug=1" line

uncomment the "hdmi_drive=2" line

Save changes to the file (ctrl+o, ctrl+x)

sudo reboot

That did the trick for me.

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