I have two monitors under kde, and the brightness and color widget can only set the brightness of the main screen. However, after I set them as the main monitor, this problem is solved. I saw that this component uses ddc to implement its functions. Is it possible to read the device information obtained by "ddcutil detect" (maybe some others) when kwin loading, and then load this component?
*** This bug has been marked as a duplicate of bug 482713 ***