I recently installed the new 2.6 version up from the 2.5.x version that was fixed for the RPI2 few weeks ago. It was working great decided to see how the new image worked, there is no sound from any emulators at all (using HDMI cable). Do any of you have similar problems ? Anyone have idea on what / how to fix it? I’ve tried my Openelec image to make sure the sound wasn’t shot. Thanks.
SOLUTION –
(Credit to justinbeaird comment from https://www.petrockblock.com/forums/topic/no-hdmi-sound-on-retropie-2-5-0-beta/)
1. hit f4 while in emulation station. ( Skip if you’re using putty )
2. type
sudo nano /boot/config.txt
3. uncoment or add (I added)
hdmi_drive=2
4. then push ctrl+x to exit then type Y to save
5. then type
sudo reboot