With the Auto-Mute enabled, if the headphone jack is plugged, the alsa hda driver will mute the speaker and set pinctl of the speaker to Hi-Z state, after this happens, even the pulseaudio unmute the speaker, the speaker still couldn't output sound because the pinctl is in Hi-Z state.
We found this issue on a Dell machine which has multi-function audio jack, after the headphone is plugged in, the speaker's availability is still unknown, users could select speaker from gnome-sound-setting, but even the speaker is selected to be the active device, it couldn't output sound.
The Auto-Mute is not useful if the pulseaudio is running since pa could mute/unmute devices according to active port change, the ucm for sof+hda already disabled the Auto-Mute, let us disable it for hda audio if the machine has the internal speaker.
Signed-off-by: Hui Wang hui.wang@canonical.com