wiki.objnux.fr

(source : https://learn.adafruit.com/adafruit-5-800x480-tft-hdmi-monitor-touchscreen-backpack/raspberry-pi-config)

Pour utiliser un écran 5“ 800×480, surtout avec un OS Lite. Il faut copier le code ci-dessous à la fin le fichier config.txt à la racine de la partition boot.

# Ecran HDMI 800x480
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt=800 480 60 6 0 0 0
hdmi_drive=1

max_usb_current=1

hdmi_cvt=800 480 60 6 0 0 0

# 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 (here we are forcing 800x480!)
hdmi_group=2
hdmi_mode=87
hdmi_cvt=800 480 60 6 0 0 0

max_usb_current=1
  
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
# hdmi_drive=2
hdmi_drive=1

# 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

# for more options see http://elinux.org/RPi_config.txt