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Is it possible to play audio over optical cables in Ubuntu?

I've got a motherboard with Realtek ALC888 onboard audio. Ubuntu can play music/sounds just fine to my headphones or over analog cables to my speakers.

However, my problem is that I use an optical cable for my speakers (Logitech Z-5500). This works great when I am booted into windows, but so far I have been unable to get it working over the optical cable.

Is there any way to solve this problem?

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2 Answers 2

You have to enable three settings to get it to work:

Make IEC958 output captured from PCM.

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Make IEC958 the new default PCM output:

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Raise the volume, unmute and enjoy!

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All those options will be available if driver has support for it and you have those options enabled under volume control.

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