After updating to 7.6.8 Beta with the new Android, the fingerprint sensor does not work (I know: the first time you need the pattern, but after that it should be no problem) .
To make it work:
I have to set the lock on 'off' and then on 'on' again in setting. After that I have to setup a new...
I'll show you two solution.
If you logged in into MIUI account.
Reboot you phone into TWRP (sound up + power) (any recovery with file manager should be ok)
Select File Manager
Goto /data/system
Remove these files: gesture.key, locksettings.db, locksettings.db-shm, locksettings.db-wal (to...