Keyboard, Trackpad, and USB unresponsive on ANSI PBP

[belfastraven]

The first step is to determine rather it's an issue with the software or hardware on the PBP.  I'd flash a Micro SD card with another OS on another computer and boot to that.  See if you have the same issue or not.  If everything works normally it's a software issue with the other OS.  If not, there may be a hardware issue.

Assuming the other OS on the micro SD is fine (which I would expect it is) I'd assume something went wrong with the manjaro install and start over there.

If you have already tried other distributions on the sd card and are getting booting,  but no usb,  (the keyboard and trackpad are usb devices, actually) it may indeed be hardware. 
Can you ssh into the device?  (the wifi adapter is unfortunately also a usb device,  but you could also use an external ethernet adapter to make a wired connection,  should it not be working.) You should should be able to look at dmesg to see if you can see usb problems,  or run lsusb,    Do you have a serial cable?  If so,  you could attempt to watch the machine u-boot messages. 

with no external usb devices, running on Manjaro, I see this from lsusb:

Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 0c45:6321 Microdia
Bus 002 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 258a:001e HAILUCK CO.,LTD USB KEYBOARD
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub