4/23/2018
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There seems to be a great many questions relating to HDMI sound not working, or doesn't work in this and that application. I know this because I've had my own fair share of problems and have decided to start this post to help others, and hopefully consolidate some of this information. Ideally I would like others share there own solutions and then this could become a reference of 'known fixes'. Asking questions here is probably pointless as I'm not that familiar to using Linux and this is about the extent of my knowledge so far. As I find new problems and their solution I will add them here, and it would be good if others can add their own fixes to specific HDMI audio problems. Distro: Debian Squeeze - No HDMI sound output at all. Still not working for me.

Debian

How To Install Mplayer Raspberry Pi. How to install Debian Raspberry Pi. (pi) user, then it played back sound, but no video appeared.

Raspbian wheezy. Have the RPi connected via hdmi to the TV (actually via an hdmi hub) and am controlling the RPi via Putty. The strangest thing, though, is that earlier tonight I did get sound (a music file wth mplayer and then later mpg123). And it only happened after I plugged in headphones into the 3.5mm out (which caused the hdmi sound output to start working).

Up until that point, I hadn't done any configuring. Now I followed the steps in this guide. Not with either of the two programs mentioned above. Not with aplay. As a matter of fact, mplayer now freezes (after uncommenting the hdmi_drive=2 line) immediately upon launch. Earlier, it would output data to the console while running (but no sound was heard).

Yes, I agree the sound over HDMI issue can be tricky. Index Of Parent Directory Windows Iso Files. I just got my RPi model B rev.2 and put 2013-02-09 Raspbian on it.