On the first partition of your SD card, you will find a file named
config.txt. This file allows you to tweak a lot of things like framebuffer resolution, overclocking, audio, and is documented here
Some TVs send a wrong EDID saying that HDMI audio is not supported while in fact it is. You may need to force HDMI audio by uncommenting this line in the
If your RPi is not booting while using an HDMI to DVI adaptor, please remove this line from your
If you are using a HDMI to VGA adaptor on a Raspberry Pi 1 or 2 and you want to use the jack output for the sound you have to write in
config.txt on the first partition of the SD card:
So the board’ll not use the HDMI sound output.