No more HDMI audio

[mc9625]

After an upgrade of a retropie + AM img, I've lost HDMI audio output.

I've tried to find a solution for it, but almost 90% of times people suggest to fix this editing the config.txt file, but mine is correct.

I have sound on the analog output but when I switch to HDMI there's no way to make it work.

Any suggestion?

BTW: this is my config.txt

#For more options and information see
#http://www.raspberrypi.org/documentation/configuration/config-txt.md
#Some settings may impact device functionality. See link above for details

disable_splash=1

#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
#hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=16
#hdmi_force_edid_audio=1

#uncomment to increase signal to HDMI, if you have interference, blanking, or
#no display
#config_hdmi_boost=7

#uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

#Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
dtparam=spi=on

#Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi

#Additional overlays and parameters are documented /boot/overlays/README

#Enable audio (loads snd_bcm2835)
dtparam=audio=on
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=256
overscan_scale=1
#audio_pwm_mode=2

[Duveldg]

I had this problem last weekend after updating everything to the last version. It seems in some emulators de audio driver was changed to alsathread. I changed it back to sdl2 and the audio was back on the emulators. I did have sound in Emulationstation but aftering entering an emulator it was gone.

Access retroarch configuratie with select+x and check the drivers in settings.

Hope it helps.