树莓派装机接入显示屏开机黑屏

article/2025/8/15 6:20:09

树莓派4B

用的2k电脑显示屏，HDMI接上开机后闪一下，然后就黑屏了。
新装的官网64位，粗略感觉显示屏分辨率问题。

1. 把sd卡插入电脑

打开boot，找到config.txt

2. 定义分辨率

把以下插入第一行

hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=85

或者直接把整个文件更换以下代码

# 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=2
hdmi_mode=85# 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