On Tuesday June 09 2026 04:32:20 Duncan wrote: >But I'm desktop (and a decade old one at that...), and
Software control over the screen brightness on an external display is not impossible by definition; there's ddcutil (and its UI) and under X11 there is also some control via `xrandr --output $TARGET_SCREEN --brightness $factor` (but on my laptop that looks more like a contrast control at least for values > 1).
