Did this issue return? Is it still happening sporadically?

I have exactly the same issue (I'm even getting the same usb bus/device
numbers). Sometimes it works fine first time. sometimes it fails until I
power cycles a few times until it eventually detects the hardware.
Unfortunately today I've restarted about a dozen times and it doesn't
work so I'm using an external keyboard/mouse (which uses a different
internal hub presumably). Unfortunately this doesn't appear to be a
kernel/ubuntu bug but a hardware issue on the Macbook. What's really
annoying is that the keyboard works in GRUB but fails to get initialized
by the kernel.

Time to find that Apple hardware geek on YouTube...

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https://bugs.launchpad.net/bugs/1776266

Title:
  Touchpad and keyboard of MacBook unresponsive

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