The EDID data written to the EPROM memory of the HDMI Display Board is overwritten

[HASHYOSH]

The EDID data written to the memory of the HDMI Display Board connected to the PC via HDMI cable may be overwritten.
EDID Data Address 0x31 Data 0x01 becomes 0x00.

The EDID data is overwritten and an EDID checksum error occurs, making it impossible to output video with the correct resolution setting from the PC.

Is there any possible cause of the graphics driver?

■Note PC
HP EliteBook 460 G11
Windows 11 Pro
23H2
22631.5768
■Graphic Driver
Intel(R) Graphics
Intel Corporation
2025/03/18
32.0.101.6651
■HDMI Display Board
Adafruit TFP401 HDMI/DVI Decoder to
40-pin TTL Display
Datasheet:
https://learn.adafruit.com/adafruit-tfp401-hdmi-slash-dvi-decoder-to-40-pin-ttl-display/downloads

[PatrickV_Intel]

Hi HASHYOSH,

Before we proceed, please note that this is an OEM device, we will try to assist you with general troubleshooting steps even if it’s something not traditionally covered in our support. However, if the issue still persists, you will have to contact the Original Equipment Manufacturer of your device. Your device manufacturer may have altered features, incorporated customizations, or made other changes to some components for better compatibility with your system.

To assist us in investigating the issue, please provide the following details:

• When did you first encountered the issue?
• Any recent changes made before you encountered the issue?
• Have you tried using the OEM driver for testing?
• What are the troubleshooting steps that you tried so far?
• Have you used Display Driver Uninstaller (DDU) to completely remove all residual drivers and installed a new one?

Additionally, to gain a comprehensive understanding of your system, please use the System Support Utility (SSU). This tool will generate a text file compiling all your system information. You can follow the instructions at this link and send the text file here. Help Guide for the Intel® System Support Utility.

If you have any questions, please let us know. Thank you.

Best regards,

Patrick V.

Intel Customer Support Technician