Mac mini HDMI port: DDC/CI does not work

I connect 2020 Mac mini (Intel UHD Graphics 630 inside) with display monitor and test DDC/CI command.

The DDC/CI command can work well via Mac mini Thunderbolt port or Thunderbolt to HDMI adapter.

But DDC/CI command does not work on Mac mini "HDMI port" only.

Mac mini HDMI port does not send 6E command slave address in normally.

PS: The DDC/CI also can works well on 13" MacBookPro 2020 Thunderbolt port.

Mac mini, macOS 10.15

Posted on Jan 4, 2021 6:38 PM

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Mac mini HDMI port: DDC/CI does not work

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