see here…

Noob to retropie, cannot get sound out of HDMI

or

No HDMI sound on RetroPie 2.5.0 beta

That should work. With my computer’s monitor with HDMI all worked immediately also, with pi b and b+.

When connecting to my Samsung HD tv, and the pi b everything was finetoo. With the pi b+ there also wasn’t any sound. Setting hdmi_drive=2 solved the issue immediately.

Some HDMI equipment interpretates the incoming signals a bit different than others. This setting solves the issue probably right away.

You did save the file after the change?
Sounds dumb but I did edit mine in the past with sudo nano, but forgot to save with ctrl-x I thought.

I found an old tutorial on my computer. From what I remember I did try this in the past on a spare sd card just to test, and from there things worked out well. Maybe you can try this aswell, just to be sure where to begin searching the base of the problem.

Maybe not, but I’ll post it anyway, hope it can help you a bit too.

[Code]
Instuctions for others who may be experiencing the same issue with a TV and the Raspberry Pi:

1. Install a fresh image

2. start-up the Raspberry Pi and let it set itself up (normal set-up)

3. After you have gone through normal set-up:

a. Log-in as a normal user (debian image: pi)

b. Type the command: “sudo nano /boot/config.txt ”

c. Press enter

d. Type in: “hdmi_drive=2 ” [exactly as it is here]

e. Then press crtl + o

f. Press Enter

g. then press crtl + x

4. Restart using the command: ” sudo shutdown -r now ”

[/code]

hdmi_force_edid_audio=1

worked for me

Hi all,

I’m having this same exact problem with retropie 3.0 beta.
I tried this solution but somewhere in the config.txt there allready is a line that says hdmi_drive=2 . I’m not sure what I’m doing wrong here, so help would be appreciated. My config.txt looks like this. I did not edit anything, it came like this after installing 3.0 beta.

___________________________________________________________________________

# uncomment if you get no picture on HDMI for a default “safe” mode
#hdmi_safe=1

# uncomment this if your display

has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1

#

uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if

there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force

a console size. By default it will be display’s size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1

#

uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

# for more options see

http://elinux.org/RPi_config.txt
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=256

overscan_scale=1

_____________________________________________________________________

thanks in advance!

Ok nevermind my noobishnes… Forgot to uncomment. works perfectly now!