The root cause of this problem seems to be the fact that libmysqlclient21 from mysql-8.0 tries to use charset files from mariadb, but they are not compatible with it and lead to a segfault. More details in this Debian bug I filed:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961672 ** Also affects: mariadb-10.3 (Ubuntu) Importance: Undecided Status: New ** Bug watch added: Debian Bug tracker #961672 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961672 ** Also affects: mariadb-10.3 (Debian) via https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961672 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1877504 Title: new version of libmysqlclient21 8.0.20-0ubuntu0.20.04.1 causes mythtv- set, mythbackend and mythfrontend to segfault on exit. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mariadb-10.3/+bug/1877504/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
