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No sound over HDMI in Ubuntu 13.10 with an Nvidia mcp78/79


I upgraded to Ubuntu 13.10 on my media box, a Zotac Zbox, , ION GPU, with the latest official nvidia drivers. After that I couldn’t get the sound over HDMI to work. Panic! After a LOT of trouble shooting I found the error – the spdif1 channel was muted in alsamixer.

So to fix this, open the trusty terminal, enter alsamixer, and lookout for the spdif1 which probaly says MM which means muted. Press M to unmute/mute a channel and raise the volume staple. You hopefully now have sound over HDMI again!

Image

(not my pic, found it on the net, thanks to whoever took it)

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