macOS Big Sur - No clamshell mode...

[solo-act]

Originally Posted by jhdevuk

Finally! After a lot of trial and error, this works perfectly for me.

I've got a 2018 Macbook Pro (Intel), with a Dell D3100 dock that I use to switch between my Windows (XPS 13) & Mac (both required for work).

Using Amphetamine, with a trigger setup for when the dock is plugged in, and "Allow system sleep when display is closed" un-ticked, everything is hunky dorey.

Thanks David!

Thanks for the tip but this sounds like a workaround to an unsolved problem in clamshell mode similar to what I'm going through with an 2019 intel Mac -- everything works in clamshell mode until the system decides to sleep or when I logout and manually put it to sleep.

A laptop with Displaylink should be able to sleep and wake up from sleep without impacting how displays are "seen", without impacting Screen Recording permission for the Displaylink Manager app, and without requiring users to power cycle their firewire docks that depend on Displaylink to work properly.