Seems related to https://bugs.launchpad.net/ubuntu/+source/alsa- driver/+bug/1784485, as I'm seeing the same symptoms, with the same temporary improvement enabling the power save as described above.
Asus UX533 Kubuntu 18.10 (4.18.0-11-generic) fresh install (dual boot with Windows 10). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1742852 Title: [hostname, Realtek ALC294, Speaker, Internal] No sound at all after windows update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1742852/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
