Sorry, I am not quite sure what that is. Sleep works great with my PC (motherboard is ASRock WRX80 Creator) and M1 MBP, but I can only adjust brightness through the OSD.

There’s a Mac app called Lunar that uses DDC (a protocol for sending commands to a screen) to allow you to adjust the brightness and volume of an external monitor with the usual keys on your MacBook keyboard (in clamshell mode at least) or with a slider. Very convenient, can’t recommend enough.

Oh OK sorry but yeah I wouldn't use that. If this is usually supported on Dell monitors, I would bet it works on these.

Personally, I rarely adjust brightness on my desktop displays and my ZMK keyboard volume buttons work reliably cross-platform.

I you don’t need it, you don’t need it, but I don’t understand the first sentence. Many different displays support DDC, my Philips at home does and the Dells and I think BenQ that we have at the office do too.

My macbook is my work laptop and the bosses don't like us installing too many extra things.

I wish my personal was a mac as well, but I had to abandon macs when they abandoned me by not upgrading the mac pro for like a decade then kept me away by later ending support for eGPUs.

i know my old Dell Ultrasharp U2415 supports this feature. There is a tool in linux with which you can switch input, also dell has a display manager in windows which allows you to perform the switching and controls. I totally love it!

Lunar dev here. Looks like it does support DDC brightness control: https://f.alinpanaitiu.com/nAa7gs/Image.png

I checked this on https://db.lunar.fyi using the following query:

    select control, name from displays where name like '%U3224K%'

Can’t be sure about DDC input switching though, I have no way of knowing that it works without trying it in front of the monitor. DDC reports success even if the command failed to switch the input.

Just wanted to say, thanks for the fantastic app. It's the first thing I install on a new computer.

Hey thanks! So happy to hear that ^_^

I'm really glad I stumbled upon this thread. I need this app badly.