全新安装的 Kubuntu 19.10
我安装了 Kalarm，它拖拽了 39 个其他包，大多数名称中都带有“akonadi”或“pim”。
然后我尝试启动 Kalarm，出现一个面板，提示“Akonadi 个人信息管理服务未运行。没有它，此应用程序无法使用。”。下面有一个很大的“开始”按钮，但点击它没有任何反应。
如果我kalarm从终端启动，我会看到：
org.kde.pim.kidentitymanagement: IdentityManager: There was no default identity. Marking first one as default.
org.kde.pim.kalarm: Preferences::setNoAutoStart: Error writing autostart file: "/home/me/.config/autostart/kalarm.autostart.desktop"
org.kde.pim.akonadicore: Unable to execute akonadi_control, falling back to D-Bus auto-launch
单击“开始”按钮将添加另一个：
org.kde.pim.akonadicore: Unable to execute akonadi_control, falling back to D-Bus auto-launch
创建/home/me/.config/autostart/kalarm.autostart.desktop删除第二行但不能解决问题。
有任何想法吗？
版本：
plasmashell 5.16.5
Qt: 5.12.4
KDE Frameworks: 5.62.0
kf5-config: 1.0
编辑：因此安装了 mariadb 和 akonadi 服务器 (5.11.3)。重新启动。现在启动kalarm显示：
org.kde.pim.kidentitymanagement: IdentityManager: There was no default identity. Marking first one as default.
Failed to register /MainApplication on DBus
""
akonadiselftest报告两个错误：
- 未找到 MySQL 服务器默认配置
- 未找到资源代理
当前安装状态：
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=================================-==================-============-==========================================
ii akonadi-backend-mysql 4:19.04.3-0ubuntu3 all MySQL storage backend for Akonadi
un akonadi-backend-postgresql <none> <none> (no description available)
un akonadi-backend-sqlite <none> <none> (no description available)
ii akonadi-server 4:19.04.3-0ubuntu3 amd64 Akonadi PIM storage service
un akonadiconsole <none> <none> (no description available)
un libakonadi-kf5 <none> <none> (no description available)
ii libkf5akonadicontact-data 4:19.04.3-0ubuntu1 all akonadi-contacts - data files
un libkf5akonadicontact5 <none> <none> (no description available)
ii libkf5akonadicontact5abi1:amd64 4:19.04.3-0ubuntu1 amd64 Akonadi contacts access library
ii libkf5akonadicore-bin 4:19.04.3-0ubuntu3 amd64 Tools for Akonadi core library
un libkf5akonadicore5 <none> <none> (no description available)
ii libkf5akonadicore5abi1:amd64 4:19.04.3-0ubuntu3 amd64 Akonadi core library
ii libkf5akonadimime-data 4:19.04.3-0ubuntu1 all akonadi-mime - data files
ii libkf5akonadimime5:amd64 4:19.04.3-0ubuntu1 amd64 Akonadi MIME handling library
ii libkf5akonadiprivate5abi2:amd64 4:19.04.3-0ubuntu3 amd64 libraries for the Akonadi PIM storage serv
ii libkf5akonadisearchpim5:amd64 4:19.04.3-0ubuntu1 amd64 Akonadi search library
un libkf5akonadisocialutils5 <none> <none> (no description available)
ii libkf5akonadiwidgets5abi1:amd64 4:19.04.3-0ubuntu3 amd64 Akonadi widgets library
un libkf5akonadixml5 <none> <none> (no description available)
ii libkf5libkdepimakonadi5:amd64 4:19.04.3-0ubuntu1 amd64 KDE PIM Akonadi library
ii libkf5mailtransportakonadi5:amd64 19.04.3-0ubuntu1 amd64 mail transport service library for akonadi