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config.txt
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config.txt
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# Docs: https://www.raspberrypi.com/documentation/computers/config_txt.html
# Overlays: https://github.com/raspberrypi/firmware/blob/master/boot/overlays/README
#-------Display---------
# Max allocated framebuffers: Set to "0" in headless mode to reduce memory usage
# - Defaults to "2" on RPi4 and "1" on earlier RPi models
#max_framebuffers=0
# If you get no picture, set the following to "1" to apply most compatible HDMI settings.
#hdmi_safe=1
# Uncomment to adjust the HDMI signal strength if you have interferences, blanking, or no display.
# - Ranges from "0" to "11", use values above "7" only if required, e.g. with very long HDMI cable.
# - Default on first RPi1 A/B is "2", else "5", on RPi4 this setting is ignored.
#config_hdmi_boost=5
# Uncomment if HDMI display is not detected and composite is being outputted.
#hdmi_force_hotplug=1
# Uncomment to disable HDMI even if plugged, e.g. to force composite output.
#hdmi_ignore_hotplug=1
# Uncomment to force a console size. By default it will be display's size minus overscan.
#framebuffer_width=1280
#framebuffer_height=720
# Uncomment to enable SDTV/composite output on RPi4. This has no effect on previous RPi models.
#enable_tvout=1
# SDTV mode
#sdtv_mode=0
# Uncomment to force a specific HDMI mode (this will force VGA).
#hdmi_group=1
#hdmi_mode=1
# Uncomment to force an HDMI mode rather than DVI. This enables HDMI audio in DMT modes.
#hdmi_drive=2
# Set "hdmi_blanking=1" to allow the display going into standby after 10 minutes without input.
# With default value "0", the display shows a blank screen instead, but will not go into standby.
# NB: Some legacy OpenMAX applications (OMXPlayer) cannot wake screens from real standby.
hdmi_blanking=1
# Set to "1" if your display has a black border of unused pixels visible.
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
# Rotation
#display_hdmi_rotate=0
#lcd_rotate=0
#-------RPi camera module-------
#start_x=1
#disable_camera_led=1
#-------GPU memory splits-------
gpu_mem_256=16
gpu_mem_512=16
gpu_mem_1024=16
#-------Boot splash screen------
disable_splash=1
#-------Onboard sound-----------
dtparam=audio=off
#-------I2C-------------
#dtparam=i2c_arm=off
#dtparam=i2c_arm_baudrate=100000
#-------SPI-------------
#dtparam=spi=off
#-------Serial/UART-----
# NB: "enable_uart=1" will enforce "core_freq=250" on RPi models with onboard WiFi.
enable_uart=1
#-------SD card HPD-----
# Comment to enable SD card hot-plug detection, while booting via USB or network.
# NB: This causes constant CPU load and kernel errors when no SD card is inserted.
dtparam=sd_poll_once
#-------Overclock-------
temp_limit=65
initial_turbo=20
#over_voltage=0
#arm_freq=900
#core_freq=250
#sdram_freq=400
#over_voltage_min=0
#arm_freq_min=300
#core_freq_min=250
#sdram_freq_min=400