Troubleshooting Linux sound problems

Some personal notes about troubleshooting audio problems with HDMI out on a HTPC running Arch Linux.

  • Unmuting outputs:

    alsamixer
    
  • Testing speaker channels:

    speaker-test -c 5 -D default -t wav
    
  • Disabling automatic suspension of sink in Pulseaudio:

    sudo vi /etc/pulse/default.pa
    

    Comment this line out:

    # load-module module-suspend-on-idle
    

    Then restart Pulseaudio (probably easiest by logging out and in to X again?)

SYSTEM ADMINISTRATION
linux audio alsa pulseaudio

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