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How to fix Raspberry Pi 4B with NOOBS no HDMI output


Symptoms

We recently bought a new Raspberry Pi 4 Model B with 2GB RAM and found that HDMI no signal when testing the compatibility of the Fastoe Pre-Installed NOOBS MicroSD Card. NOOBS 3.3.0/3.4.0/3.5.0 are no display.

Cause

It may be caused by the failure of Raspberry Pi 4 Model B resolution adaptation.

Resolution

To resolve this issue, specify the resolution by modifying the config.txt file, like this:

gpu_mem=16
start_file=recovery.elf
fixup_file=fixup_rc.dat

[pi4]
start_file=recover4.elf
fixup_file=fixup4rc.dat
#remove black borders
disable_overscan=1
#set specific CVT mode
hdmi_cvt 800 480 60 6 0 0 0
More information

The Fastoe pre-installed NOOBS microSD card has solved this problem and we recommend that first-time Pi users start with the NOOBS operating system for the Raspberry Pi, perfect for a Raspberry Pi beginner and convenient for those with more experience.