Created attachment 162581 [details] Screenshot that shows the Error-message in KMail SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. Use 'akonadictl start' or 'akonadictl restart' to start Akonadi OBSERVED RESULT Various crashes in the log, no Mail functionality in KMail / Merkuro Mail EXPECTED RESULT Akonadi starting normally SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Neon 5.27 (available in About System) KDE Plasma Version: KDE Plasma 5.27.9 KDE Frameworks Version: 5.111.0 Qt Version: 5.15.11 ADDITIONAL INFORMATION In KMail, every Account displays as "Offline". Clicking on "Synchronise" doesn't change that. Going to the Account-Settings, it displays "Unable to start" for every account (See attachment) Here is a log when executing 'akonadictl restart' nsc@nsc-laptop:~/Projects/Qt_Projects/NIS_One-Click-Backup_Qt/src/build$ Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString) org.kde.pim.akonadiserver: Starting up the Akonadi Server... akonadi.collectionattributetable OK akonadi.collectionmimetyperelation OK akonadi.collectionpimitemrelation OK akonadi.collectiontable OK akonadi.flagtable OK akonadi.mimetypetable OK akonadi.parttable OK akonadi.parttypetable OK akonadi.pimitemflagrelation OK akonadi.pimitemtable OK akonadi.pimitemtagrelation OK akonadi.relationtable OK akonadi.relationtypetable OK akonadi.resourcetable OK akonadi.schemaversiontable OK akonadi.tagattributetable OK akonadi.tagremoteidresourcerelationtable OK akonadi.tagtable OK akonadi.tagtypetable OK This installation of MariaDB is already upgraded to 10.6.12-MariaDB. There is no need to run mysql_upgrade again for 10.6.12-MariaDB. You can use --force if you still want to run mysql_upgrade org.kde.pim.akonadiserver: Running DB initializer org.kde.pim.akonadiserver: DB initializer done Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString) qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: Akonadi server is now operational. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b8001e10) ) org.kde.pim.akonadiserver: Notification subscriber received ModifySubscription command before RegisterSubscriber org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b801aa90) ) org.kde.pim.akonadiserver: Notification subscriber received ModifySubscription command before RegisterSubscriber org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b802cb00) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b8001e10) identified as "InternalEmailAddressSelectionWidgetModel - 94765452439184" org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b801aa90) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b8029a20) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b801aa90) identified as "KAddressBook::Globaqt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. lContactSession - 94765480613824" qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b8029a20) identified as "ETMCalendarMonitor - 94489287872032" qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. QSocketNotifier: Can only be used with threads started with QThread QSocketNotifier: Can only be used with threads started with QThread QSocketNotifier: Can only be used with threads started with QThread QSocketNotifier: Can only be used with threads started with QThread QSocketNotifier: Can only be used with threads started with QThread QSocketNotifier: Can only be used with threads started with QThread org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b8095a70) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b809e6e0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b809e9f0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80a7ce0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80b1310) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80ba680) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80c3a40) ) org.kde.pim.akonadiserver: Subscriber "" disconnected org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80c3a40) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b8095a70) identified as "AgentBaseChangeRecorder - 16266576" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80c3a40) identified as "KNotes Session - 16309296" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80c3a40) identified as "KNotes Session - 16309296" org.kde.pim.akonadiserver: Cannot connect to agent instance with identifier 'akonadi_akonotes_resource_0', error message: '' org.kde.pim.akonadiserver: Cannot connect to agent instance with identifier 'akonadi_akonotes_resource_0', error message: '' org.kde.pim.akonadiserver: Subscriber "" disconnected org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80d83d0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80d83d0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80d93c0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80d9830) ) org.kde.pim.akonadiserver: Subscriber "" disconnected org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80fafe0) ) org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_maildir_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_maildir_resource' crashed! 1 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_birthdays_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_birthdays_resource' crashed! 1 restarts left. org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80fafe0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b8111650) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b810d460) ) qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_migration_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_migration_agent' crashed! 1 restarts left. org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b809e6e0) identified as "AgentBaseChangeRecorder - 94239220171248" qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b809e9f0) identified as "AgentBaseChangeRecorder - 94304166862224" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80d83d0) identified as "Archive Mail Kernel ETM - 94304169662384" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80d93c0) identified as "ArchiveMailCollectionMonitor - 94304169680464" qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80ba680) identified as "AgentBaseChangeRecorder - 94728429139664" qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80a7ce0) identified as "AgentBaseChangeRecorder - 94207403012528" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80fafe0) identified as "MailFilter Kernel ETM - 94207403199824" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80d9830) identified as "UnifiedMailboxChangeRecorder - 140735508132048" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b8111650) identified as "MailFilterCollectionMonitor - 94207403216592" qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b810d460) identified as "MailFilterItemMonitor - 94207403216912" org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_indexing_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_indexing_agent' crashed! 1 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b810f730) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80b1310) identified as "AgentBaseChangeRecorder - 94456659981024" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b810f730) identified as "SpecialCollectionsMonitor - 94207403468032" org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_pop3_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_pop3_resource' crashed! 1 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_ical_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_ical_resource' crashed! 1 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_maildispatcher_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_maildispatcher_agent' crashed! 1 restarts left. could not open /nix/store/0dgf1lwbbcby9kk3m1n6mnnbl760l1fx-kio-5.108.0/lib/qt-5.15.9/plugins/kf5/kio/kio_http.so: Cannot load library /nix/store/0dgf1lwbbcby9kk3m1n6mnnbl760l1fx-kio-5.108.0/lib/qt-5.15.9/plugins/kf5/kio/kio_http.so: (/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_ABI_DT_RELR' not found (required by /nix/store/ibp4camsx1mlllwzh32yyqcq2r2xsy1a-glibc-2.37-8/lib/libpthread.so.0)) qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. could not open /nix/store/0dgf1lwbbcby9kk3m1n6mnnbl760l1fx-kio-5.108.0/lib/qt-5.15.9/plugins/kf5/kio/kio_http.so: Cannot load library /nix/store/0dgf1lwbbcby9kk3m1n6mnnbl760l1fx-kio-5.108.0/lib/qt-5.15.9/plugins/kf5/kio/kio_http.so: (/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_ABI_DT_RELR' not found (required by /nix/store/ibp4camsx1mlllwzh32yyqcq2r2xsy1a-glibc-2.37-8/lib/libpthread.so.0)) qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_mailmerge_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_mailmerge_agent' crashed! 1 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_akonotes_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_akonotes_resource' crashed! 1 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_followupreminder_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_followupreminder_agent' crashed! 1 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_contacts_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_contacts_resource' crashed! 1 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_newmailnotifier_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_newmailnotifier_agent' crashed! 1 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_imap_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_imap_resource' crashed! 1 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_birthdays_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_birthdays_resource' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_contacts_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_contacts_resource' crashed! 0 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_followupreminder_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_followupreminder_agent' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_migration_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_migration_agent' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_ical_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_ical_resource' crashed! 0 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_maildir_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_maildir_resource' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_akonotes_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_akonotes_resource' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_mailmerge_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_mailmerge_agent' crashed! 0 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_indexing_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_indexing_agent' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_pop3_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_pop3_resource' crashed! 0 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_maildispatcher_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_maildispatcher_agent' crashed! 0 restarts left. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_newmailnotifier_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_newmailnotifier_agent' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_imap_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_imap_resource' crashed! 0 restarts left. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_birthdays_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_birthdays_resource' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_contacts_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_contacts_resource' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_followupreminder_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_followupreminder_agent' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_migration_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_migration_agent' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_maildir_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_maildir_resource' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_ical_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_ical_resource' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_indexing_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_indexing_agent' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_akonotes_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_akonotes_resource' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_maildispatcher_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_maildispatcher_agent' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_imap_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_imap_resource' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_newmailnotifier_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_newmailnotifier_agent' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_mailmerge_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_mailmerge_agent' crashed too often. Giving up! org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_pop3_resource" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_pop3_resource' crashed too often. Giving up! org.kde.pim.akonadiserver: Subscriber "" disconnected org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b8110910) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b8110910) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b806a2c0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b80ccda0) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b810fb20) ) org.kde.pim.akonadiserver: Subscriber "" disconnected org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b810fb20) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b806a960) ) org.kde.pim.akonadicontrol: Agent instance ( "setAgentInstanceOnline" ) "akonadi_maildispatcher_agent" has no agent interface. org.kde.pim.akonadicontrol: Agent instance ( "setAgentInstanceOnline" ) "akonadi_imap_resource_6" has no agent interface. org.kde.pim.akonadicontrol: Agent instance ( "setAgentInstanceOnline" ) "akonadi_pop3_resource_0" has no agent interface. org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7ff7b806a6d0) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b8110910) identified as "KMail Kernel ETM - 94117996044784" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b806a2c0) identified as "SpecialCollectionsMonitor - 94117996948176" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b80ccda0) identified as "MessageListTagMonitor - 94117996883664" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b810fb20) identified as "MessageViewerMonitor - 94117993934416" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b810fb20) identified as "MessageViewerMonitor - 94117993934416" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b806a960) identified as "TagActionManagerMonitor - 94118002633312" org.kde.pim.akonadicontrol: Agent instance ( "setAgentInstanceOnline" ) "akonadi_maildir_resource_0" has no agent interface. org.kde.pim.akonadicontrol: "AgentManager::agentInstanceSynchronize" Agent instance "akonadi_maildir_resource_0" has no resource interface! org.kde.pim.akonadicontrol: Agent instance ( "setAgentInstanceOnline" ) "akonadi_pop3_resource_0" has no agent interface. org.kde.pim.akonadicontrol: "AgentManager::agentInstanceSynchronize" Agent instance "akonadi_pop3_resource_0" has no resource interface! org.kde.pim.akonadicontrol: Agent instance ( "setAgentInstanceOnline" ) "akonadi_pop3_resource_0" has no agent interface. org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7ff7b806a6d0) identified as "FilterManagerTagMonitor - 94118003116992" org.kde.pim.akonadicontrol: "AgentManager::agentInstanceSynchronizeCollection" Agent instance "akonadi_imap_resource_6" has no resource interface! org.kde.pim.akonadiserver: Cannot connect to agent instance with identifier 'akonadi_imap_resource_6', error message: '' org.kde.pim.akonadiserver: Cannot connect to agent instance with identifier 'akonadi_imap_resource_6', error message: '' org.kde.pim.akonadicontrol: Agent instance ( "setAgentInstanceOnline" ) "akonadi_imap_resource_6" has no agent interface. org.kde.pim.akonadicontrol: "AgentManager::agentInstanceSynchronizeCollection" Agent instance "akonadi_imap_resource_6" has no resource interface!
You installation is misconfigured or incomplete, Akonadi complains that it cannot connect to your window system (X11). Possibly you don't have "DISPLAY" environment set (?). > qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. > qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. > This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Please report the issue to your distribution.
I don't understand, because I don't use X11. I am using Wayland. Also, my distribution is KDE Neon, that's why I am reporting this here also.
(In reply to Daniel Vrátil from comment #1) > You installation is misconfigured or incomplete, Akonadi complains that it > cannot connect to your window system (X11). I don't understand, because I don't use X11. I am using Wayland. > Possibly you don't have "DISPLAY" environment set (?). How would I set that? > Please report the issue to your distribution. My distribution is KDE Neon, that's why I am reporting this here.