After upgrading to 5.6.0-1011-oem it seems sound is back without the alsa change above.
This will take you away from the 5.4 kernel shipped by default on ubuntu - use at your own risk. You will have to periodically check for and install newer versions on your own after installing this. sudo apt install linux-image-5.6.0-1011-oem -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873083 Title: Lenovo Yoga C940 frequently does thermal shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873083/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs