DDC input source does not work on HDMI

[Bouncysig18]

i used a monitor which support DDC functions, i successfully use betterdisplay to change the luminance and volume of monitor (not built-in one). and i successfully use to change the ddc input from windows (hdmi1) to mac (hdmi2). And when i used the betterdisplay to try to change the ddc input, there is no a phenomena that the display usually blinks once.

[waydabber]

It is because a non-working code is being used for DDC input. You can customize the input source codes under Settings/Displays/the display/Hardware control/Input Sources...