Kubuntu 16.10中的Kontact将无法启动，因为Akonadi服务器无法启动

我正在使用Kubuntu 16.10并且无法启动Kontact，因为Akonadi无法启动。 以下是akonadictl start的输出。

似乎Akonadi存在严重问题。 有没有人有任何想法？ 我只是索尔？ 是否可以安装Akonadi和Kontact的低级版本？ 

 trekker@trekker-HP-Notebook:/usr/bin$ akonadictl start Starting Akonadi Server... done. Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString) trekker@trekker-HP-Notebook:/usr/bin$ akonadiprivate_log: search paths: ("/home/trekker/bin", "/home/trekker/.local/bin", "/usr/local/sbin", "/usr/local/bin", "/usr/sbin", "/usr/bin", "/sbin", "/bin", "/usr/games", "/usr/local/games", "/snap/bin", "/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" Using mysqld: "/usr/sbin/mysqld-akonadi" mysqld reports version 5.7.16 (Oracle MySQL) Executing: "/usr/sbin/mysqld-akonadi" "--defaults-file=/etc/xdg/akonadi/mysql-global.conf --initialize --datadir=/home/trekker/.local/share/akonadi/db_data/" mysqld: [ERROR] Could not open required defaults file: /etc/xdg/akonadi/mysql-global.conf mysqld: [ERROR] Fatal error in defaults handling. Program aborted! Executing: "/usr/sbin/mysqld-akonadi" "--defaults-file=/home/trekker/.local/share/akonadi/mysql.conf --datadir=/home/trekker/.local/share/akonadi/db_data/ --socket=/tmp/akonadi-trekker.LbKUAD/mysql.socket" Database process exited unexpectedly during initial connection! executable: "/usr/sbin/mysqld-akonadi" arguments: ("--defaults-file=/home/trekker/.local/share/akonadi/mysql.conf", "--datadir=/home/trekker/.local/share/akonadi/db_data/", "--socket=/tmp/akonadi-trekker.LbKUAD/mysql.socket") stdout: "" stderr: "mysqld: Error on realpath() on '/var/lib/mysql-files' (Error 2 - No such file or directory)\n2016-11-18T19:16:26.102182Z 0 [Warning] The syntax '--log_warnings/-W' is deprecated and will be removed in a future release. Please use '--log_error_verbosity' instead.\n2016-11-18T19:16:26.102229Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).\n2016-11-18T19:16:26.102276Z 0 [ERROR] Failed to access directory for --secure-file-priv. Please make sure that directory exists and is accessible by MySQL Server. Supplied value : /var/lib/mysql-files\n2016-11-18T19:16:26.102279Z 0 [ERROR] Aborting\n\n2016-11-18T19:16:26.102290Z 0 [Note] Binlog end\n" exit code: 1 process error: "Unknown error" terminating service threads terminating connection threads stopping db process Failed to remove Unix socket Failed to remove runtime connection config file Application 'akonadiserver' exited normally... trekker@trekker-HP-Notebook:/usr/bin$

好像我找到了解决办法。 基于我在Kubuntu论坛中找到的一个post，我做了以下内容：

sudo mkdir / var / lib / mysql-files

我用这些步骤解决了这个问题：

创建了文件夹： 

 sudo mkdir /var/lib/mysql-files

开始服务： 

 akonadictl start

清除并重新安装Kontact： 

 sudo apt purge kontact && sudo apt install Kontact

启动Kmail

希望这可以帮助。

问候。

解决了它删除本地配置目录rm ~/.local/share/akonadi并用akonadictl start重新启动它

对我来说这没有帮助（lubuntu 17.04），但我发现了这个错误

所以这解决了我的问题： 

 sudo apt-get install apparmor-utils sudo aa-complain usr.sbin.mysqld-akonadi
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