Also note that MonitorControl [1] might be a good complement to this program - it allows manual setting of brightness and contrast, but also adds volume control.
Lunar also has volume control, could not fit that into the title.
It's absolutely great, totally what I needed for years. Other tools I tried crashed my Macbook. Lunar has been absolutely smooth, and great design to boot. I immediately bought the author a coffee.
Edit: updated the title
Any hint on where to find volume ctrl?
The volume keys on my Apple Magic keyboard just started working with my LG. It seems the monitor needs to have a speaker and be the audio-out device for this to be active.
Oh man I’ve been looking for something to control volume like this forever. Doing audio over DisplayPort/HDMI locks me out of controlling volume (since it’s handled by the monitor) so I’m really hoping this helps with that.
My experience has been that my monitor has limited volume control capability (compared to the knob on my external speakers, which are plugged into the monitor).
It's nice for mute/unmute though
Second that, I use MonitorControl and it has made adjusting volume and brightness... how it should be.