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.
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.