Thank you for the info. I didn't know this part at all. Any workaround available?
That does look like it might do the job - thank you. I'm not ready to try this yet - but if/ when I do I'll report back on success / failI haven’t tested it, but it might be possible to use an EDID emulator like the one below to trick the MacBook Pro into thinking there is a display attached.
This sort of trick is used for some of the wireless screen-mirroring apps like Luna Display to enable graphics acceleration, so it’s definitely possible.
Also confirming, I can connect from my PowerBook G4 12” (Tiger 10.4.11) via Remote Desktop v3.4, to:I have a 2015 MBP that operates in clamshell mode and screen shares just fine.
Maybe that's because I have sleep set to 'Never'?