I use a similar workflow, except I send the i2c stuff straight to the monitor without a docking hub in the middle. I can verify that this works fine on 5.5.11.

I use a similar workflow, except I send the i2c stuff straight to the monitor without a docking hub in the middle. I can verify that this works fine on 5.5.11. I use a udev rule to detect a USB 3 hub being plugged in and plugged out, and ddccontrol sends the relevant i2c signals to the monitors. I'm happy with the ddccontrol based switching with 2 computers (linux desktop + mbp), but I want to add an additional computer (mbp) to the mix, so my workflow won't work anymore. Does anyone know of dual head DP KVM switches that work reliability? Googling shows a few options, but the they are old posts and things may have changed. Single head (1 DP monitor + MST) works for the linux desktop but Apple does not support MST on macbooks it seems like[1][2] (I can't even find an official page on apple.com with relevant details). I have tried [3] but it is quite buggy with displays blanking out once every few minutes even with higher quality, DP 1.2 compliant cables (cable length < 1.2m). [1] https://www.dell.com/community/Monitors/P2720DC-use-MST-function-on-MacBook-Pro-16/td-p/7628116 https://www.dell.com/community/Monitors/P2720DC-use-MST-func... [2] https://old.reddit.com/r/MacOS/comments/gliki5/in_2020_why_does_macos_still_not_fully_implement/ https://old.reddit.com/r/MacOS/comments/gliki5/in_2020_why_d... [3] https://www.amazon.com/gp/product/B089LY4S63/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B089LY4S63/ref=ppx_yo_dt_b... (select the 2 monitor x 4 computers DP model)