This problem persists on the same system with all the latest updates. I did however notice that in the "hardware" part of the GUI there is no longer a "2.1" option, so defaulting to analogue stereo output.
I tried connecting an external speaker ("headphone") and it sounded as it should. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1903765 Title: Subwoofer mapped incorrectly on Macbook 2.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1903765/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs