TigrisAltaica from Ubuntu Forums has reported a similar issue on a HP Pavilion Laptop, unfortunately, renaming /etc/modprobe.d/alsa-base.conf to /etc/modprobe.d/alsa-base.bk didn't fix the issue.
Here's the report: https://ubuntuforums.org/showthread.php?t=2396039 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1770429 Title: Ubuntu 18.04 No audio from speakers. Headphones working. Surface Pro 3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1770429/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs