Oh, so it's related to tcmalloc. Thanks. Here is the full backtrace with debug symbols.
** Attachment added: "backtrace - debug build" https://bugs.launchpad.net/mixxx/+bug/1789059/+attachment/5388091/+files/2020-06-29%204H41%20gdb%20mixxx-debug.txt.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789059 Title: continual GUI freeze To manage notifications about this bug go to: https://bugs.launchpad.net/mixxx/+bug/1789059/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs