When I connect a USB-C PD charger the device goes into a short (~8 second) boot loop, during which the screen (HDMI or DP) never turns on. The red light turns on for a few seconds, the blue light flashes a couple of times, then the red light goes off for a second and on again, this repeats over and over. I’ve tried a 87W MacBook Pro charger as well as an (arguably underpowered) 18W Google Pixel charger.
The only power source that works for me is a MacBook Pro USB-C port.
Looking at the spec of my charger (https://gtrusted.com/apple-87w-usb-c-power-adapter) it can deliver 5V@2.4A, 9V@3A or 20V@4.35A, so I’m a bit puzzled.
Can anyone help?