Connection not detected between macbook air & imac

[SoylentGraham]

with 1.2.3, I'm attaching a macbook air 6,1 (High Sierra) to an imac13,2 (Sierra)

The system report recognises each other under thunderbolt, (so the cable is connected okay) but VirtualKVM just has Host: ready to accept connections and macbook has client mode: not connected.

Moreover, I cannot seem to manually invoke target display mode, (but with a non-apple keyboard)

It may just be a case of an incompatible pair of machines, but just in case, I thought I'd report it! :)

[SoylentGraham]

I paired an apple bluetooth keyboard and it instantly worked... I don't know if Target Display Mode REQUIRES any, or an apple bluetooth keyboard to be attached? (I'm sure I've done this before -on different machines- without one)
But a regular USB keyboard, it wasn't happy with...

[SoneeJohn]

@SoylentGraham Hmm, according to Apple:

Some older Apple keyboards and third-party keyboards might not allow Command-F2 to toggle display modes. If this happens, use the keyboard that came with your iMac to toggle Target Display Mode on and off.

Maybe that's what caused it :-)

[SoylentGraham]

Does VirtualKVM emulate/invoke a keyboard press as if it was from a specific keyboard?

I still have the non-apple keyboard plugged in, and then paired the bluetooth one, and then it kicked into life.
Pressing CMD+F2 on the non-apple doesn't trigger anything. But it does on the apple keyboard...

It's such an odd implementation/restriction from apple :)