Tried to enable overscan and now no image

[mdaz]

I noticed that when playing, i was getting both horizontal black border as well as the vertical black borders. In an effort to remove them I changed a few settings, however now on boot I'm just getting a blank screen. I've tried numerous things but nothing works. On boot I see linux starting, but when it gets to the spot that emulation station loads, the screen just goes blank (but not off).

Note everything was working beforehand so it's not hardware related...

Screen I'm using is a Lenovo LCD monitor. I can't remember the exact model and its in my cabinet so hard to determine.

Pi Model or other hardware: Pi4
Power Supply used: (If using a Pi): Hidden now but not changed from when it was working
RetroPie Version Used: 4.8.8
Built From: Pre made SD card I believe
Error messages received: None, just blank screen

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=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.
over_voltage=6
arm_freq=2048
v3d_freq=750

# 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
gpu_mem=256

# add shutdown button
dtoverlay=gpio-shutdown,gpio_pin=3
[all]
dtoverlay=gpio-fan,gpiopin=14,temp=80000```

```pi@bartop:/ $ /opt/vc/bin/tvservice -s
state 0xa [HDMI CUSTOM RGB full 16:9], 1920x1080 @ 60.00Hz, progressive
pi@bartop:/ $ /opt/vc/bin/tvservice -m CEA
Group CEA has 4 modes:
           mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive
  (prefer) mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive
           mode 95: 3840x2160 @ 30Hz 16:9, clock:297MHz progressive
           mode 97: 3840x2160 @ 60Hz 16:9, clock:594MHz progressive
pi@bartop:/ $ /opt/vc/bin/tvservice -m DMT
Group DMT has 1 modes:
           mode 4: 640x480 @ 60Hz 4:3, clock:25MHz progressive

[sugarfree]

First, back up the config.txt file.

Then, try modify disable_overscan=1 by changing it to #disable_overscan=1 .

Also, the last part looks strange. Did you have add it to fix the overscan issue?

state 0xa [HDMI CUSTOM RGB full 16:9], 1920x1080 @ 60.00Hz, progressive
pi@bartop:/ $ /opt/vc/bin/tvservice -m CEA
Group CEA has 4 modes:
           mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive
  (prefer) mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive
           mode 95: 3840x2160 @ 30Hz 16:9, clock:297MHz progressive
           mode 97: 3840x2160 @ 60Hz 16:9, clock:594MHz progressive
pi@bartop:/ $ /opt/vc/bin/tvservice -m DMT
Group DMT has 1 modes:
           mode 4: 640x480 @ 60Hz 4:3, clock:25MHz progressive

Generally, for overscan issues, you have to uncomment and change these values:

#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16