How to fix distorted HDMI sound (Ubuntu 16.04 LTS)

Upgrading to Ubuntu 16.04 LTS resulted in distorted sound when connecting my laptop to a TV and trying to play sound through the HDMI TV connection. The fix was to change the default.pa PulseAudio config file as follows:

  1. Open the config file using sudo gedit /etc/pulse/default.pa
  2. Change the line load-module module-udev-detect to  load-module module-udev-detect tsched=0. This disables tsched which enables the interrupt based timing on your sound card.

That’s it!

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