Was looking for something to do exactly this. I code a lot at night and sometimes the monitors are just waaaaay too bright. This worked like a charm. Thanks for making this available.
hi I have downloaded the app and still can't get it work for my m1 Mac mini and Samsung Odyssey G9. It will not control the sound on applications such as MS teams etc? Is there anything I am doing wrong? I have made sure I am using the latest version of the firmware etc
This works really well now on both of my external displays with my M1 Mini.
FYI: my older display glitches badly when DCC Hardware control is enabled, so turning that off makes it work just fine. I had to reset the built-in menu setting on the old display to get it working again. This is almost certainly a firmware problem with that display.
Works very well now and is being worked on constantly.
My config:
Mac mini M1 -> USB-C to Display Port cable -> LG 27UL650-W
Controls brightness and contrast of display, and also controls the headphone jack volume.