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Lubuntu doesn't use pulse audio, only ALSA. The only tools that come with it are alsamixer, alsactl, and aplay.

I have already managed to output sound from my TV using this command:

aplay -D plughw:0,3 /usr/share/sounds/alsa/Front_Center.wav

How can I switch to HDMI without installing pulseaudio, or anything else, using only the tools that are already available out of the box?

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up vote 2 down vote accepted

Try to put the following entry into /etc/asound.conf or your ~/.asoundrc:

pcm.!default = pcm.hdmi
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Thanks, this worked, but I need to logout/login for the changes to take place, is there a command to reload the .asoundrc file? Preferably without requiring root. – sashoalm Nov 3 '13 at 17:04
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The .asoundrc file is read by the ALSA library whenever a program opens some ALSA device the first time. – CL. Nov 3 '13 at 19:35

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