I got the same error log message when starting KMail after upgrading from Kubuntu 14.04 to 16.04. (Of course, something KMail-related getting broken in an update isn't surprising anymore, email being bleeding-edge and all . . . )
2017-01-08T02:29:26.960676Z 0 [ERROR] unknown variable 'innodb_additional_mem_pool_size=1M' 2017-01-08T02:29:26.960682Z 0 [ERROR] Aborting Checking mysql-global.conf I found: # memory pool InnoDB uses to store data dictionary information and other internal data structures (default:8M) # Deprecated in MySQL >= 5.6.3, removed in 5.7 (works in MariaDB) # innodb_additional_mem_pool_size=8M Note that not only is the innodb_additial_mem_pool_size already commented out in the existing version of the config file, its value is 8M, not the 1M in the log! Deleting the line entirely allowed KMail to start -- so far, so good. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to akonadi in Ubuntu. https://bugs.launchpad.net/bugs/1569651 Title: akonadi startup fails with unknown variable innodb_additional_mem_pool_size [Xenial 16.04] Status in akonadi package in Ubuntu: Fix Released Bug description: My akonadi startup has started failing. The error being reported by the selftest is: 2016-04-13T02:38:42.426124Z 0 [ERROR] unknown variable 'innodb_additional_mem_pool_size=1M' I will attach the akonadi-selftest-report. The following fix resolved the problem: --- /etc/xdg/akonadi/mysql-global.conf.orig 2015-12-17 16:42:16.000000000 -0600 +++ /etc/xdg/akonadi/mysql-global.conf 2016-04-12 21:52:52.347751457 -0500 @@ -39,7 +39,7 @@ # memory pool InnoDB uses to store data dictionary information and other internal data structures (default:1M) # Deprecated in MySQL >= 5.6.3 -innodb_additional_mem_pool_size=1M +#innodb_additional_mem_pool_size=1M # memory buffer InnoDB uses to cache data and indexes of its tables (default:128M) # Larger values means less I/O Version Info: Description: Ubuntu Xenial Xerus (development branch) Release: 16.04 ii akonadi-backend-mysql 4:15.12.1-0ubuntu3 all MySQL storage backend for Akonadi ii akonadi-server 4:15.12.1-0ubuntu3 amd64 Akonadi PIM storage service ii libakonadi-kde4 4:4.14.10-1ubuntu2 amd64 library for using the Akonadi PIM data server ii libakonadi-kmime4 4:4.14.10-1ubuntu2 amd64 Akonadi MIME handling library ii libakonadiprotocolinternals1 1.13.0-8ubuntu2 amd64 libraries for the Akonadi PIM storage service ii libkf5akonadiagentbase5:amd64 4:15.12.1-2ubuntu3 amd64 Akonadi agent base library ii libkf5akonadicalendar5:amd64 4:15.12.1-0ubuntu2 amd64 library providing calendar helpers for Akonadi items ii libkf5akonadicontact5:amd64 4:15.12.1-2ubuntu3 amd64 Akonadi contacts access library ii libkf5akonadicore-bin 4:15.12.1-2ubuntu3 amd64 Tools for Akonadi core library ii libkf5akonadicore5:amd64 4:15.12.1-2ubuntu3 amd64 Akonadi core library ii libkf5akonadimime5:amd64 4:15.12.1-2ubuntu3 amd64 Akonadi MIME handling library ii libkf5akonadinotes5:amd64 4:15.12.1-2ubuntu3 amd64 Akonadi notes access library ii libkf5akonadiprivate5 4:15.12.1-0ubuntu3 amd64 libraries for the Akonadi PIM storage service ii libkf5akonadisearchdebug5:amd64 4:15.12.1-0ubuntu1 amd64 Akonadi search debug library ii libkf5akonadisearchpim5:amd64 4:15.12.1-0ubuntu1 amd64 Akonadi search library ii libkf5akonadiwidgets5:amd64 4:15.12.1-2ubuntu3 amd64 Akonadi widgets library To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/akonadi/+bug/1569651/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
