Can you please try live booting Ubuntu 18.10 and tell us if the problem exists in that release too?
http://releases.ubuntu.com/18.10/ ** Package changed: alsa-driver (Ubuntu) => pulseaudio (Ubuntu) ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1803871 Title: [HP Spectre x360 Convertible 15-ch0xx, Realtek ALC295, Speaker, Internal] No proper automute when playback is active on headphones plug in To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1803871/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs