PS: to replicate the bug, you may install mariadb on ubuntu(version 10.2), then install Postgresql version 9.5 with postgis version 9.2 It crashes with above stated thread topic error.
~Kudos to ubuntu team Yours sincere ubuntu enthusiast -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759751 Title: mysql not downgrading to v5.5 after installing mariadbv10.2 and then purging it completely, mariadb service instance still clashing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.5/+bug/1759751/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs