SUMMARY Akonadi does not start in Debian Testing Note: The version provided by Debian is *not* selectable from the version options available apt list --installed \*akonadi\* akonadi-backend-mysql/testing,testing,now 4:18.08.1-1 all [installed] akonadi-server/testing,now 4:18.08.1-1+b2 amd64 [installed] STEPS TO REPRODUCE 1. sudo apt install mariadb-server or sudo apt install mysql-server-5.7 2. sudo apt install akonadi-backend-mysql 3. akonadictl start OBSERVED RESULT Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString) org.kde.pim.akonadiserver: Database process exited unexpectedly during initial connection! org.kde.pim.akonadiserver: executable: "/usr/sbin/mysqld" org.kde.pim.akonadiserver: arguments: ("--defaults-file=/home/zeta/.local/share/akonadi/mysql.conf", "--datadir=/home/zeta/.local/share/akonadi/db_data/", "--socket=/tmp/akonadi-zeta.HZOggO/mysql.socket", "--pid-file=/tmp/akonadi-zeta.HZOggO/mysql.pid") org.kde.pim.akonadiserver: stdout: "" org.kde.pim.akonadiserver: stderr: "Could not open required defaults file: /home/zeta/.local/share/akonadi/mysql.conf\nFatal error in defaults handling. Program aborted\n" org.kde.pim.akonadiserver: exit code: 1 org.kde.pim.akonadiserver: process error: "Unknown error" /usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/tmp/akonadi-zeta.HZOggO/mysql.socket' (2 "No such file or directory")' Check that mysqld is running and that the socket: '/tmp/akonadi-zeta.HZOggO/mysql.socket' exists! org.kde.pim.akonadiserver: Failed to remove runtime connection config file org.kde.pim.akonadicontrol: Application 'akonadiserver' exited normally... EXPECTED RESULT akonadi starts Operating System: Debian GNU/Linux KDE Plasma Version: 5.14.3 Qt Version: 5.11.3 KDE Frameworks Version: 5.51.0 Kernel Version: 4.19.0-1-amd64 OS Type: 64-bit Processors: 4 × Intel® Core™ i7-7500U CPU @ 2.70GHz Memory: 31.3 GiB of RAM ADDITIONAL INFORMATION I also tryed the following sudo aa-complain usr.sbin.mysqld-akonadi sudo rm /usr/sbin/mysqld-akonadi sudo ln -s /usr/sbin/mysqld /usr/sbin/mysqld-akonadi ln -s /home/zeta/.local/share/akonadi/mysql.conf $HOME/.config/akonadi/mysql-local.conf