Hallo!
Es gibt aktuell einen Log-Bug bei Akonadi. Der Workaround ist das simple Anlegen einer leeren Datei:
touch ~/.local/share/akonadi/db_data/ib_logfile0
Quelle: https://bugs.kde.org/show_bug.cgi?id=454948#c6
Ob das für dich die richtige Lösung ist siehst du an der Ausgabe von
akonadictl --verbose start
Da steht dann, erfolgreich beendet, obwohl vorher Fehler waren. Sowas
kde@delly[~]› Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
org.kde.pim.akonadiserver: Starting up the Akonadi Server...
org.kde.pim.akonadiserver: Found mysql_install_db: "/usr/bin/mysql_install_db"
org.kde.pim.akonadiserver: Found mysqlcheck: "/usr/bin/mysqlcheck"
org.kde.pim.akonadiserver: Using mysqld: "/usr/bin/mysqld"
org.kde.pim.akonadiserver: mysqld reports version 10.8.3 (MariaDB)
org.kde.pim.akonadiserver: Executing: "/usr/bin/mysqld" "--defaults-file=/home/kde/.local/share/akonadi/mysql.conf --datadir=/home/kde/.local/share/akonadi/db_data/ --socket=/run/user/1002/akonadi/mysql.socket --pid-file=/run/user/1002/akonadi/mysql.pid"
org.kde.pim.akonadiserver: database server stopped unexpectedly
org.kde.pim.akonadiserver: Database process exited unexpectedly during initial connection!
org.kde.pim.akonadiserver: executable: "/usr/bin/mysqld"
org.kde.pim.akonadiserver: arguments: ("--defaults-file=/home/kde/.local/share/akonadi/mysql.conf", "--datadir=/home/kde/.local/share/akonadi/db_data/", "--socket=/run/user/1002/akonadi/mysql.socket", "--pid-file=/run/user/1002/akonadi/mysql.pid")
org.kde.pim.akonadiserver: stdout: ""
org.kde.pim.akonadiserver: stderr: "2022-06-21 17:18:10 0 [Note] /usr/bin/mysqld (server 10.8.3-MariaDB) starting as process 64450 ...\n"
org.kde.pim.akonadiserver: exit code: 1
org.kde.pim.akonadiserver: process error: "Unknown error"
org.kde.pim.akonadiserver: terminating connection threads
org.kde.pim.akonadiserver: terminating service threads
org.kde.pim.akonadiserver: stopping db process
org.kde.pim.akonadiserver: Shutting down AkonadiServer...
org.kde.pim.akonadicontrol: Application '/usr/bin/akonadiserver' exited normally...
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