More experiments:
knoppix@Microknoppix:~$ akonadictl start
Starting Akonadi Server...
done.
knoppix@Microknoppix:~$ Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QStr ing,QString,QString)
search paths: ("/usr/local/sbin", "/usr/local/bin", "/usr/sbin", "/usr/bin", "/sbin", "/bin", "/usr/games", "/usr/sbin", "/usr/local/sbin", "/usr/local/libexec", "/usr/libexec", "/opt/mysql/libexec", "/opt/local/lib/mysql5/bin", "/opt/mysql/sbin")
Found mysql_install_db: "/usr/bin/mysql_install_db"
Found mysqlcheck: "/usr/bin/mysqlcheck"
Failed to use database "akonadi"
Database error: "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) QMYSQL: Unable to connect"
Trying to create database now...
QSqlDatabasePrivate::removeDatabase: connection 'initConnection' is still in use, all queries will cease to work.
Database error: Cannot open database.
Last driver error: "QMYSQL: Unable to connect"
Last database error: "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111)"
QSqlQuery::exec: database not open
Unable to open database "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) QMYSQL: Unable to connect"
.....