If I switch back to MariaDB 5 without changing anything, it works perfectly again. Switch to MariaDB 10 - does not work again, and so forth.Connection failed: SQLSTATE[HY000] [1045] Access denied for user 'films'@'localhost' (using password: YES)
I can even login to phpMyAdmin using this user (films) and browse the database configured for it.
Maybe someone with an experience in this area could give an advise regarding the appropriate configuration? I'm not a database expert and could be missing something completely obvious. Or might forget some non-obvious tweak which I applied years ago for MariaDB 5 and not for MariaDB 10.