Devices not detected when on mains power (2015 MacBook Pro)

So this is very strange. Overbridge seems to work fine and detect my Analog Rytm and Digitone when I’m running my MacBook Pro on battery power, but when I plug my power supply in it loses connection all of a sudden. This happens on both of my USB ports.

I wondered if it might be something to do with a ground loop issue and I have a ground isolating USB connector which I use to resolve a ground loop issue with my Nord G2- when I use this the devices are detected but won’t actually work. All my other USB devices work absolutely fine…

I’m using a third-party power supply, will try an official Apple one if I can track one down

Yeah, wouldn’t surprise me. See if you can borrow an authentic cable and see if the power issues disappear.

Ended up buying an official Apple PSU.

Totally sorted the problem, everything is detected properly now

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