Comment by jasim | Hacker News Reader

Comment by jasim | Hacker News Reader

Alongwith ddctrl (https://github.com/kfix/ddcctl), these aliases serve all my external monitor brightness needs:

    alias verydull="~/Software/ddcctl/ddcctl -d 1 -b 3 -c 15"
    alias dull="~/Software/ddcctl/ddcctl -d 1 -b 6 -c 35"
    alias decent="~/Software/ddcctl/ddcctl -d 1 -b 10 -c 40"
    alias medium="~/Software/ddcctl/ddcctl -d 1 -b 25 -c 50"
    alias bright="~/Software/ddcctl/ddcctl -d 1 -b 30 -c 50"
    alias morebright="~/Software/ddcctl/ddcctl -d 1 -b 35 -c 60"
    alias superbright="~/Software/ddcctl/ddcctl -d 1 -b 100 -c 80"

For Linux, use ddcutil.

I wrote a GUI slider that wraps around the command line, so I don't have to type the numbers each time.

Well, there's also ddccontrol: https://github.com/ddccontrol/ddccontrol that has an optional GUI. I think that's the one I've used in the past.

Pretty much all monitor settings are exposed.

I made an app to wrap around ddcctl that works on osx, it works fine for my own uses and if anyone want to improve it feels free.

https://github.com/bshep/ASUS-DDC-Volume

I combine this with https://github.com/nriley/brightness to retrieve the brightness of the main screen, then I use ddcctl to apply it to the external screen.

I set it up in a cron job and that has been running for years now. (the external monitor brightness is not very linear though, so you need to fiddle a big to find the proper/acceptable matching)

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