Created attachment 166252 [details] Screenshot I guess the "color" part in "Brightness and Color" refers to the night light feature. This is always available. However, there are no brightness settings in the applet for me and thus the title "Brightness and Color" is a bit confusing. Maybe the applet could show a hint or placeholder message that "brightness controls are not available"?
That's true, yeah.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/4042
The MR linked above was closed for technical reasons. With PowerDevil being hooked up to KWin brightness on Wayland, I think the way forward is to have KWin provide software brightness adjustments if no hardware brightness capabilities are found. We'll probably want a message like "This screen doesn't provide hardware brightness controls, adjusting its brightness by software will result in reduced color depth." instead. Either way it seems that we can have brightness controls for all screens going forward.