No Sound w/ GPi Case 2 + CM 4 (SOLVED)

TPR

I have been able to get RetroPie up and running on the GPi Case 2 with the CM 4 Lite board and the Pi 4 RetroPie build from the downloads section but I cannot get any sound. Anyone have any suggestions on how to get the sound working?

I have the GPi case patched with the new config.txt from RetroFlag. Here are the contents of that config.txt:

For more options and information see

http://rpf.io/configtxt

Some settings may impact device functionality. See link above for details

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

#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 infrared communication.

#dtoverlay=gpio-ir,gpio_pin=17
#dtoverlay=gpio-ir-tx,gpio_pin=18

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

Enable audio (loads snd_bcm2835)

dtparam=audio=off

display_rotate=0
dtoverlay=dpi24
overscan_left=0
overscan_right=0
overscan_top=0
overscan_bottom=0
framebuffer_width=640
framebuffer_height=480
#framebuffer_depth=8
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=0x00016
hdmi_timings=640 0 41 40 41 480 0 18 9 18 0 0 0 60 0 24000000 1 #80hz
#hdmi_timings=640 0 20 1 20 480 0 1 1 2 0 0 0 60 0 24000000 1 #59hz

[pi4]

Enable DRM VC4 V3D driver on top of the dispmanx display stack

dtoverlay=vc4-fkms-v3d
max_framebuffers=2

[all]
#dtoverlay=vc4-fkms-v3d
overscan_scale=1
dtoverlay=dwc2,dr_mode=host

TPR

SOLVED!

Press F4 on your keyboard to get to the command prompt.
type: sudo nano /usr/share/alsa/alsa.conf
change the following two lines from:
defaults.ctl.card 0
defaults.pcm.card 0
to
defaults.ctl.card 1
defaults.pcm.card 1
Reboot the system.

jeremy32428

So I was having the same issue with my gpi case 2, what I did was I used the update feature and after a update and reboot it works perfectly.