On Fri, 28 Jun 2019, at 07:41, Oliver Jaksch via arch-general wrote: > Updated three of my KDE clients by terminal (not logged in by display > manager/DM) and ran > > # systemctl restart mariadb.service && mariadb-upgrade -u root -p This doesn't affect akonadi's data since it is located someplace else at a non-system location: /usr/bin/mysqld --defaults-file=$HOME/.local/share/akonadi/mysql.conf --datadir=$HOME/.local/share/akonadi/db_data/ --s ocket=/tmp/akonadi-xxx.LdhzVw/mysql.socket --pid-file=/tmp/akonadi-xxx.LdhzVw/mysql.pids I suggest you look into actually upgrading akonadi's DB first. For that, you probably can pass --defaults-file and --datadir as-is to mariadb-upgrade (and the upgrade should be executed as the user akonadi is running as, not root).