Troubleshooting • Raspberry Pi 4B HDMI port 0 is not working

Code:

# 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 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 interfacesdtparam=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# Automatically load overlays for detected camerascamera_auto_detect=1# Automatically load overlays for detected DSI displaysdisplay_auto_detect=1# Enable DRM VC4 V3D driverdtoverlay=vc4-fkms-v3dmax_framebuffers=2# Disable compensation for displays with overscandisable_overscan=1[cm4]# Enable host mode on the 2711 built-in XHCI USB controller.# This line should be removed if the legacy DWC2 controller is required# (e.g. for USB device mode) or if USB support is not required.otg_mode=1[all][pi4]# Run as fast as firmware / board allowsarm_boost=1[all]disable_splash=1initramfs initramfs.imgenable_uart=1hdmi_force_hotplug:0=1#hdmi_force_hotplug:1=1hdmi_drive=2hdmi_group=2hdmi_mode=68