A detailed guide on modifying HDMI dummy plug EDID data using a Raspberry Pi. The process involves using I2C tools to read the original EDID from the dummy plug's EEPROM, capturing EDID data from a desired monitor or capture device, and reprogramming the dummy plug to mimic the new device. The tutorial covers the necessary hardware setup, software prerequisites, safety precautions, and step-by-step commands for reading, backing up, and writing EDID data using standard Linux I2C utilities.
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