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Bonjour !

Je reviens vous voir parce que les logiciels de la suite Kontact ne fonctionnent visiblement pas, j'ai en tout cas essayé avec Kmail et Korganizer et j'ai comme message d'erreur "Un service d'arrière-plan requis est non opérationnel". Savez-vous à quoi c'est dû et comment régler ce soucis ?

Merci !

Édité par Gwên Le 23/07/2026 à 11h01

Salut et bienvenue

C'est fort probablement akonadictl qui ne tourne pas. Mais c'est étrange car normalement et est d'office avec Plasma.

akonadictl status
akonadictl restart

Merci de la réponse

Malheureusement le problème est toujours là. Voici ce que donnent les commandes entrées :

akonadictl status
Akonadi Control: stopped
Akonadi Server: stopped
Akonadi Server Search Support: available (Remote Search)
Available Agent Types: akonadi_archivemail_agent, akonadi_birthdays_resource, akonadi_contacts_resource, akonadi_davgroupware_resource, akonadi_ews_resource, akonadi_ewsmta_resource, akonadi_followupreminder_agent, akonadi_google_resource, akonadi_ical_resource, akonadi_icaldir_resource, akonadi_imap_resource, akonadi_indexing_agent, akonadi_knut_resource, akonadi_kolab_resource, akonadi_maildir_resource, akonadi_maildispatcher_agent, akonadi_mailfilter_agent, akonadi_mailmerge_agent, akonadi_mbox_resource, akonadi_migration_agent, akonadi_mixedmaildir_resource, akonadi_newmailnotifier_agent, akonadi_openxchange_resource, akonadi_pop3_resource, akonadi_sendlater_agent, akonadi_unifiedmailbox_agent, akonadi_vcard_resource, akonadi_vcarddir_resource


akonadictl restart
Akonadi is not running.


akonadictl start
org.kde.pim.akonadictl: Starting Akonadi Server...
org.kde.pim.akonadictl: done.
[gwen@localhost ~]$ Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
qt.qpa.services: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: App info not found for 'org.kde.akonadi_control'")
org.kde.pim.akonadiserver: Starting up the Akonadi Server...
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/sbin/mysqld"
org.kde.pim.akonadiserver: arguments: QList("--defaults-file=/home/gwen/.local/share/akonadi/mysql.conf", "--datadir=/home/gwen/.local/share/akonadi/db_data/", "--socket=/run/user/1000/akonadi/mysql.socket", "--pid-file=/run/user/1000/akonadi/mysql.pid")
org.kde.pim.akonadiserver: stdout: ""
org.kde.pim.akonadiserver: stderr: "/usr/sbin/mysqld: Deprecated program name. It will be removed in a future release, use '/usr/sbin/mariadbd' instead\n"
org.kde.pim.akonadiserver: exit code: 1
org.kde.pim.akonadiserver: process error: "Erreur inconnue"
org.kde.pim.akonadiserver: See "/home/gwen/.local/share/akonadi/db_data/mysql.err" for more details
org.kde.pim.akonadiserver: Shutting down AkonadiServer...
org.kde.pim.akonadicontrol: Application '/usr/bin/akonadiserver' exited normally...

Peux-tu nous ouvrir ce fichier ?
/home/gwen/.local/share/akonadi/db_data/mysql.err

2026-07-23 15:05:29 0 [Note] Starting MariaDB 12.3.2-MariaDB source revision 9f98f82b14a9b939834281672b6d0cf965db69a3 server_uid FizGZEVN3FjfcPRxmKH+MM+l5dA= as process 7103
2026-07-23 15:05:29 0 [Warning] --innodb-file-per-table is deprecated and will be removed in a future release
2026-07-23 15:05:29 0 [Warning] option 'innodb-log-buffer-size': unsigned value 1048576 adjusted to 2097152
2026-07-23 15:05:29 0 [Note] InnoDB: Compressed tables use zlib 1.3.1.zlib-ng
2026-07-23 15:05:29 0 [Note] InnoDB: Number of transaction pools: 1
2026-07-23 15:05:29 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2026-07-23 15:05:29 0 [Note] InnoDB: Using Linux native AIO
2026-07-23 15:05:29 0 [Note] InnoDB: innodb_buffer_pool_size_max=8388608m, innodb_buffer_pool_size=128m
2026-07-23 15:05:29 0 [Note] InnoDB: Completed initialization of buffer pool
2026-07-23 15:05:29 0 [Note] InnoDB: Buffered log writes (block size=512 bytes)
2026-07-23 15:05:29 0 [Note] InnoDB: Header page consists of zero bytes in datafile: ./ibdata1, Space ID: 0, Flags: 0
2026-07-23 15:05:29 0 [ERROR] InnoDB: The data file './ibdata1' has the wrong space ID. It should be 0, but 0 was found
2026-07-23 15:05:29 0 [ERROR] InnoDB: Plugin initialization aborted with error Data structure corruption
2026-07-23 15:05:29 0 [Note] InnoDB: Starting shutdown...
2026-07-23 15:05:29 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2026-07-23 15:05:29 0 [Note] Plugin 'wsrep-provider' is disabled.
2026-07-23 15:05:29 0 [ERROR] Unknown/unsupported storage engine: innodb
2026-07-23 15:05:29 0 [ERROR] Aborting

Bonjour,

On pourrait essayer de renommer le fichier /home/gwen/.local/share/akonadi/db_data/ibdata1 ( "mv /home/gwen/.local/share/akonadi/db_data/ibdata1 /home/gwen/.local/share/akonadi/db_data/ibdata1.bak" ) puis essayer de relancer akonadi avec un "akonadictl restart" . Ici je préfère renommer que que de supprimer ( le mieux étant d' avoir une copie du /home/gwen/.local/share/akonadi/db_data/ pour eviter un problème de perte de données.

Aucun changement malheureusement, la commande restart renvoie juste "Akonadi is not running".

Bonjour,

Le akonadictl restart lance akonadi aprés avoir indiqué que le serveur n'est pas lancé ?

Le fichier mysql.err remonte de nouveau une erreur ?

Édité par nic80 Le 23/07/2026 à 22h14

Bonjour, désolée du délai de réponse, j'étais sur la route !

akonadictl restart n'a aucun effet, en tout cas la commande status indique bien qu'il est désactivé. Par contre je peux le démarrer avec un start mais ça ne fonctionne pas pour autant.

mysql.err renvoie toujours ça :

2026-07-24 6:48:47 0 [Note] Starting MariaDB 12.3.2-MariaDB source revision 9f98f82b14a9b939834281672b6d0cf965db69a3 server_uid unknown as process 2428
2026-07-24 6:48:47 0 [Warning] WSREP: Failed to guess base node address. Set it explicitly via wsrep_node_address.
2026-07-24 6:48:47 0 [Warning] WSREP: Failed to guess base node address. Set it explicitly via wsrep_node_address.
2026-07-24 6:48:47 0 [Warning] WSREP: Guessing address for incoming client connections failed. Try setting wsrep_node_incoming_address explicitly.
2026-07-24 6:48:47 0 [Note] WSREP: Node addr:
2026-07-24 6:48:47 0 [Warning] --innodb-file-per-table is deprecated and will be removed in a future release
2026-07-24 6:48:47 0 [Warning] option 'innodb-log-buffer-size': unsigned value 1048576 adjusted to 2097152
2026-07-24 6:48:47 0 [Note] InnoDB: The first data file './ibdata1' did not exist. A new tablespace will be created!
2026-07-24 6:48:47 0 [Note] InnoDB: Compressed tables use zlib 1.3.1.zlib-ng
2026-07-24 6:48:47 0 [Note] InnoDB: Number of transaction pools: 1
2026-07-24 6:48:47 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2026-07-24 6:48:47 0 [Note] InnoDB: Using Linux native AIO
2026-07-24 6:48:47 0 [Note] InnoDB: innodb_buffer_pool_size_max=8388608m, innodb_buffer_pool_size=128m
2026-07-24 6:48:47 0 [Note] InnoDB: Completed initialization of buffer pool
2026-07-24 6:48:47 0 [ERROR] InnoDB: undo tablespace './/undo001' exists. Creating system tablespace with existing undo tablespaces is not supported. Please delete all undo tablespaces before creating new system tablespace.
2026-07-24 6:48:47 0 [ERROR] InnoDB: Database creation was aborted with error Generic error. You may need to delete the ibdata1 file before trying to start up again.
2026-07-24 6:48:47 0 [Note] InnoDB: Starting shutdown...
2026-07-24 6:48:47 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2026-07-24 6:48:47 0 [Note] Plugin 'wsrep-provider' is disabled.
2026-07-24 6:48:47 0 [ERROR] Unknown/unsupported storage engine: innodb
2026-07-24 6:48:47 0 [ERROR] Aborting

Par ailleurs le fichier ibdata1 n'est pas recréé lors de la tentative de rallumage.

Édité par Gwên Le 25/07/2026 à 09h10

On avance.

undo tablespace './/undo001' exists. Creating system tablespace with existing undo tablespaces is not supported. Please delete all undo tablespaces before creating new system tablespace.

Peux-tu renommer undo001 en undo001.bak ?

Bonjour,

Plutôt que undo0001, il faut regarder les fichiers undoxxxx dans leur totalité. En effet, il est indiqué :

Please delete all undo tablespaces before creating new system tablespace.

Bien entendu, à titre conservatoire, il faudra plutôt renommer que supprimer dans un premier temp.

Citation :

le fichier ibdata1 n'est pas recréé lors de la tentative de rallumage.

Je suppose que c' est un comportement attendu. Le serveur SQL au démarrage doit d' abord vérifier l' intégrité de la base et éventuellement annuller les transactions qui n' auraient pas été "commitées" en base ( je suppose que les fichiers undo sont là pour là).

Je suppose que "system tablespace" est le fichier ibdata1 et donc avec les fichiers undo celui ci ne peut pas être recrée.

Hello ! C'est fait. Pas de changement visiblement. Voici ce que renvoie mysql.err

akonadictl start
org.kde.pim.akonadictl: Starting Akonadi Server...
org.kde.pim.akonadictl: done.
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
[gwen@localhost ~]$ qt.qpa.services: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: App info not found for 'org.kde.akonadi_control'")
org.kde.pim.akonadiserver: Starting up the Akonadi Server...
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/sbin/mysqld"
org.kde.pim.akonadiserver: arguments: QList("--defaults-file=/home/gwen/.local/share/akonadi/mysql.conf", "--datadir=/home/gwen/.local/share/akonadi/db_data/", "--socket=/run/user/1000/akonadi/mysql.socket", "--pid-file=/run/user/1000/akonadi/mysql.pid")
org.kde.pim.akonadiserver: stdout: ""
org.kde.pim.akonadiserver: stderr: "/usr/sbin/mysqld: Deprecated program name. It will be removed in a future release, use '/usr/sbin/mariadbd' instead\n"
org.kde.pim.akonadiserver: exit code: 1
org.kde.pim.akonadiserver: process error: "Erreur inconnue"
org.kde.pim.akonadiserver: See "/home/gwen/.local/share/akonadi/db_data/mysql.err" for more details
org.kde.pim.akonadiserver: Shutting down AkonadiServer...
org.kde.pim.akonadicontrol: Application '/usr/bin/akonadiserver' exited normally...

See "/home/gwen/.local/share/akonadi/db_data/mysql.err" for more details

Peut-on avoir le nouveau contenu du fichier mysql.err ?

Ah oui pardon, je me suis plantée de copier-coller.

2026-07-28 23:26:33 0 [Note] Starting MariaDB 12.3.2-MariaDB source revision 9f98f82b14a9b939834281672b6d0cf965db69a3 server_uid FizGZEVN3FjfcPRxmKH+MM+l5dA= as process 2674
2026-07-28 23:26:33 0 [Warning] --innodb-file-per-table is deprecated and will be removed in a future release
2026-07-28 23:26:33 0 [Warning] option 'innodb-log-buffer-size': unsigned value 1048576 adjusted to 2097152
2026-07-28 23:26:33 0 [Note] InnoDB: The first data file './ibdata1' did not exist. A new tablespace will be created!
2026-07-28 23:26:33 0 [Note] InnoDB: Compressed tables use zlib 1.3.1.zlib-ng
2026-07-28 23:26:33 0 [Note] InnoDB: Number of transaction pools: 1
2026-07-28 23:26:33 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2026-07-28 23:26:33 0 [Note] InnoDB: Using Linux native AIO
2026-07-28 23:26:33 0 [Note] InnoDB: innodb_buffer_pool_size_max=8388608m, innodb_buffer_pool_size=128m
2026-07-28 23:26:33 0 [Note] InnoDB: Completed initialization of buffer pool
2026-07-28 23:26:33 0 [ERROR] InnoDB: redo log file './ib_logfile0' exists. Creating system tablespace with existing redo log file is not recommended. Please delete redo log file before creating new system tablespace.
2026-07-28 23:26:33 0 [ERROR] InnoDB: Database creation was aborted with error Generic error. You may need to delete the ibdata1 file before trying to start up again.
2026-07-28 23:26:33 0 [Note] InnoDB: Starting shutdown...
2026-07-28 23:26:33 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2026-07-28 23:26:33 0 [Note] Plugin 'wsrep-provider' is disabled.
2026-07-28 23:26:33 0 [ERROR] Unknown/unsupported storage engine: innodb
2026-07-28 23:26:33 0 [ERROR] Aborting