Same here; the upgrade to alsa-ucm-conf 1.2.2-1ubuntu0.3 alone wasn't enough to fix the issue on my Regolith install (Ubuntu 20.04.1).
However, after upgrading I once more tried the fixes described in the following article (essentially the same workarounds that others have suggested in this thread) and this time it worked! Not quite on par with the sound that comes out of the speakers on Win 10, but good enough. https://www.sysorchestra.com/linux-mint-20-upgrade-on-lenovo-thinkpad-x1 -carbon-7th-sound-and-fingerprints/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872108 Title: Bass not on working Lenovo ThinkPad X1 Carbon 7th gen running focal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-ucm-conf/+bug/1872108/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs