akonadi-backend-mysql is version 1.13.0-2ubuntu4
mysql* is 5.6.24-0ubuntu1
I had a second error which was caused by a wrong configuration (may was set by a package?)
/usr/sbin/mysqld-akonadi has to be used as mysql executable.
Check with akonadi console Server>Configure Server
I can't say why, but it works again for me.
akonadi- backend- mysql is version 1.13.0-2ubuntu4
mysql* is 5.6.24-0ubuntu1
I had a second error which was caused by a wrong configuration (may was set by a package?) mysqld- akonadi has to be used as mysql executable.
/usr/sbin/
Check with akonadi console Server>Configure Server