Black screen when plugged to TV

[mitu]

You have all the hdmi_ options commented, so there's no configuration here. Remove the # to un-comment the configuration option:

hdmi_group=1
hdmi_mode=16

and remove your overclock when testing.

If that doesn't work, try with hdmi_safe=1.

[duiz]

I got things to show up, but it has 2 issues now.

1. there is no audio out of the tv

2. the screen seems to be outputting a 720p window within a 1080p frame. So the pi is outputting 1080, but the information is inside the 720 frame.

[BuZz]

@duiz ate you using the first HDMI port - next to the usb c power input? You need to use that port for sound.

[duiz]

@BuZz I am using the one that is almost right underneath the usb-c power port, is that the right one?

[mitu]

@duiz It's not quite underneath, it's on the 1st HDMI port right of the USB-C port. Did you configure your audio to go through the HDMI port using the Audio menu in RetroPie ?

[duiz]

@mitu Yes I selected HDMI in the retropie options

[BuZz]

@duiz that case changes the port positions. Maybe try the other port if you still can't get audio working.

[duiz]

@BuZz I'll give it a try. Do you have any idea about the other issue? (1080 output with a 720 frame within it.

[BuZz]

@duiz turn off overscan in raspi-config.

[duiz]

@BuZz Tried to uncomment the overscan but it still outputs into a 720 window on a 1080 output. Is it just a case of the software being too early still and exhibiting bugs with 1080p displays perhaps?

For reference, this is what I am working with now as we are testing it

# 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=0

# 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=16

# 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=on

[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

No audio out of either HDMI port, black display on one TV but not the other. 1080p display but framed 720 output.

[ozjara]

tengo el mismo problema pero con la diferencia que si tengo imagen y sonido, pero cuando estoy jugando la pantalla se pone negra y la señal vuelve sola, probe varias configuraciones y cables HDMI, sin suerte

[A Bored Ninja]

@duiz Here is my idea for fixing your resolution problem.

Firstly, try this.

Change this:

#disable_overscan=1

To this:
disable_overscan=1

Reset and see if that fixes it.

If that doesn't work change this :
#framebuffer_width=1280
#framebuffer_height=720

To this :
framebuffer_width=1920
framebuffer_height=1080

Make sure to remove the # before those lines.

If it doesn't work be sure to put it back the way it was.

Hopefully one of those ideas helps.