changing the screen brightness adjustment value

[René J.V. Bertin]

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).