A short post detailing the many trials and tribulations of setting brightness on multiple monitors in tandem. Background As regular readers might know, I have a multi-screen setup, which accounts for having touch enabled on my primary laptop screen (detailed here). A failing of this setup was that I was not able to control the brightness of both monitors at the same time. Existing Stack Since I use i3, my brightness control is simply done with bindsym lines as follows1:
