Public bug reported:

My laptop is a Toshiba Satellite C850D with updated 18.04 installed.
When resuming from suspend, I have no keyboard and touchpad.
dmesg shows "i8042: Can't reactivate KBD port"

This looks like a recurring problem, and is just like these:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1014240
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1142118

Here's the dmesg output from before and after suspending.
https://paste.ubuntu.com/p/rsFX9Yw7Xh/

This post also talks about this bit failing for a lot of people!
http://lightrush.ndoytchev.com/random-1/i8042quirkoptions

Some of the function keys work, such as changing the screen brightness,
but the key (fn+F5) does not turn the touchpad back on. I have not yet
tried any of the suggested options, as results have been mixed, but I
will.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-20-generic 4.15.0-20.21
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon May  7 22:01:26 2018
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-signed (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

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https://bugs.launchpad.net/bugs/1769792

Title:
  Keyboard and Touchpad do not work after suspend/resume

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