[colordrops]

Funny, I just started playing with DDC a few days ago. I've got a work (Mac) and a personal laptop (Dell XPS with Linux) that I like switching between. I had a thunderbolt hub, but was getting tired of moving the cable back and forth, and it was also unreliable on the Mac, causing it to heat up and slow down on occasion.

I ended up just buying a pure USB hub with a switch, and running a persistent polling bash script on the Mac and the Linux machines that calls the appropriate DDC commands to switch the monitor input based on which machine the USB hub is switched to. It's fast and works great.

[pabs3]

If you get bored of the polling, there is a tool that does this in an event driven way:

https://github.com/haimgel/display-switch/ https://haim.dev/posts/2020-07-28-dual-monitor-kvm/ https://news.ycombinator.com/item?id=24357308

[colordrops]

Nice thank you. I was originally using udev and launchd to drive actions based on events, but they took up to 10 seconds to switch. A purpose built tool would like the ones you linked I assume would not have that problem.

[pabs3]

I haven't used it, but the blog post makes it sound like it is instant.

[mikecarlton]

I wrote a little script to do this automatically when your bluetooth keyboard switches between computers. I just updated it to work with m1 Macs based on the recent work.

See https://github.com/mikecarlton/bluekvm