I am running Xubuntu 18.04.4 LTS on a Lenovo X380 Yoga Thinkpad.
Ocassionally (less than once a week) my keyboard will stop responding, only my mouse works. When that happens I can't restart (nicely) my computer either. I can navigate to the shutdown menu with my mouse but when I click on shutdown or restart nothing happens. I have to forcibly shut it down by pressing the power button for 5 seconds.
I haven't noticed a pattern that triggers the problem, so I don't know how to reproduce it.
Any hints on diagnosing the problem? I appreciate the time.
UPDATE 1: I just noticed that the on-screen keyboard (onboard) also doesn't work.