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powertop reports that Intel CougarPoint HDMI is 100% active and there are reports that this device consumes a lot of power. If that is so, I would like to disable it as I never use it. Is there a way I can disable it?

I am using Ubuntu 11.10

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2 Answers 2

  1. Click on the speaker icon, top right. Choose 'Sound Settings...'
  2. Click on the Hardware tab
  3. Select the HDMI device and choose 'Off' from the pull-down menu.

enter image description here

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3  
The Hardware tab seems to have disappeared in newer versions of Ubuntu (I'm using 13.10 and don't see it.) –  Drew Noakes Nov 8 '13 at 19:28

To disable the audio device (not just mute) run in terminal

sudo alsa force-unload

alsa options are

unload|reload|force-unload|force-reload|suspend|resume

In case you require the audio device at a later stage.

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