display-switch VS RaspberryPi-Joystick

I’ve been using display-switch[0] for this for a while now. No problems whatsoever. Works on windows/mac/linux.

[0] https://github.com/haimgel/display-switch

Now it just need to be combined with something like https://github.com/haimgel/display-switch to do a DDC/CI monitor input switch as the USB activity moves around.

With a device like this you'd be missing the on_usb_connect event, but presumably you could do something (a special HID device button, an extra device id appearing, who knows) to make it work.

The best option I've found is to hook both computers up to a USB-only KVM, and plug them in via separate video cables to the monitor. Then set up the computers to tell the monitor to change inputs (via DDC commands, which most but not all monitors support) when you change devices on the KVM

There's software to help do this automatically (https://github.com/haimgel/display-switch)

Cynical footnote: PC users can continue to enjoy https://github.com/haimgel/display-switch while Mac users need to buy a 300 USD device. That's the Mac experience for you :D

There's a workaround in https://github.com/haimgel/display-switch now for M1 Macs. In general, you made your bed by buying a Mac, sleep in it.

Oops I missed that https://github.com/haimgel/display-switch

Then we will run https://github.com/haimgel/display-switch to have the monitors switch inputs when you use the USB switch.

Also, controllers that are usually used for USB on the desktop computer side are not capable to emulate USB devices, but there are specialized devices for that (random web search results - https://www.hagstromelectronics.com/usbtousb-shp.html, http://goodfet.sourceforge.net/hardware/facedancer20/, I would also dig into Raspberry Pi with USB OTG + software https://raspberrypi.stackexchange.com/questions/82850/use-raspberry-pi-as-keyboard-mouse-output-to-control-server since it's cheap and easily available, there are probably better options). There are exceptions - e.g., Raspberry Pi Zero is also a "computer" but USB OTG capable https://github.com/milador/RaspberryPi-Joystick https://unix.stackexchange.com/a/283147.