Thanks a lot for your quick response!
Peter Brawley Wrote:
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> > unknown variable
> 'innodb_additional_mem_pool_size=1M'
>
> That variable was removed in MySQL version 5.7.4.
> You don't say what was updated, but apparently the
> update introduced this backward incompatibility.
Sorry, I updated Kubuntu 14.04 LTS to 16.04 LTS (both Long Term Support).
Peter Brawley Wrote:
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> That akonadi error report fails to clarify whether
> it refers to the mysql.event table, or to an
> akonadi event table in another DB. Ask the makers
> of akonadi.
>
> For how to run mysql_upgrade see
>
https://dev.mysql.com/doc/refman/5.7/en/mysql-upgrade.html.
> But if akonadi relies on MySQL, then it ought to
> either manage your MySQL instance seamlessly, or
> show you how to. So I would ask the makers of
> akonadi, or replace the tool with something that's
> less bug-ridden.
You mean this is no MySQL Problem but an Akonadi/Kubuntu one? So it's useless for me to work through the linked doc (I'm afraid it demands too much of me)?
Is there no chance to repair the MySQL-part? Data loss would not be a problem, because I have backups.