Comment 5 for bug 2052492

FIX (Maybe?)

I put the keyboard aside for (about) a week. During this time the laptop when through a usual
 'apt update/apt upgrade' process and reboot.

When I tried to subsequently re-pair the keyboard, the 'passcode dialog' stayed visible,
and the keyboard paired.

Considerations:
- This laptop is not the fastest (i5-3210M CPU @ 2.50GHz), and this time I waited after
  entering the passcode (and pressinbg enter) for the pairing to be successful.
  This took maybe 5-10 sec. I may not have been as patient in the first case and quit
  the pairing dialog to try again.

- Deleting the detected entry for the keyboard in the Bluetooth list and getting it
  to be detected again, did not help.