Comment by GeorgeDewar

I love this approach, but a few years ago I tried it very unsuccessfully with my Xiaomi Mi 34" ultrawide.

By very unsuccessfully, I mean that the commands to change input didn't work. I can't remember if they did nothing or crashed the monitor, but subsequent investigation led me to realise I was lucky not to brick it, as some people found certain commands cause non-recoverable issues on that monitor!

So, I suggest caution in the form of maybe checking that others have successfully used DDC commands on your particular model.

https://github.com/rockowitz/ddcutil/issues/153