I have KDE Neon installed, and with version 4:16.12.3 akonadi_control always crashes the first time I start any pim application (normally kontact). Then it restarts itself and everything is fine, except I get this crash information.
Crash information: Application: akonadi_control (akonadi_control), signal: Aborted Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f19272f58c0 (LWP 2328))] Thread 2 (Thread 0x7f191a8be700 (LWP 2329)): #0 0x00007f1925644b5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f1922136c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f19221388d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f191ce16d79 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007f1925f59b48 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f19253346ba in start_thread (arg=0x7f191a8be700) at pthread_create.c:333 #6 0x00007f192565082d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f19272f58c0 (LWP 2328)): [KCrash Handler] #6 0x00007f192557f428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54 #7 0x00007f192558102a in __GI_abort () at abort.c:89 #8 0x00007f1925f40811 in QMessageLogger::fatal(char const*, ...) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x000000000042f85f in akInit (appName=...) at /workspace/build/src/shared/akdebug.cpp:197 #10 0x000000000042d5e2 in AkApplicationBase::init (this=this@entry=0x7ffd0ad471b0) at /workspace/build/src/shared/akapplication.cpp:62 #11 0x0000000000409d9b in AkApplicationImpl<QGuiApplication>::AkApplicationImpl (loggingCategory=..., argv=0x7ffd0ad47318, argc=@0x7ffd0ad4701c: 1, this=0x7ffd0ad471b0) at /workspace/build/src/shared/akapplication.h:83 #12 main (argc=1, argv=0x7ffd0ad47318) at /workspace/build/src/akonadicontrol/main.cpp:56
That's a fatal error message when akonadi_control cannot connect to DBus session. Means that there's some problem with your session not starting DBus properly or not having the environment set, not a bug in Akonadi.
*** Bug 378240 has been marked as a duplicate of this bug. ***