Pulseaudio keeps enabling optical output

[Egbert van der Wal]

My laptop (Clevo P650RA) has a combined optical out (SPDIF) and headphone jack. The jack is continously emitting a red light for the optical output, even when I'm not using it (which is almost always).

I can manually disable this by running 'alsamixer' and mute channel 'S/PDIF 16'. However, this state is not stored. After a reboot it is always re-enabled. I tried saving alsa mixer levels but this is ignored.

Additionally, when switching output profiles from 'Analog Stereo Duplex' to 'Digital Stereo (IEC958)-output', the S/PDIF 16 channel is unmuted again and the red light turns on. But when I switch back to 'Analog Stereo Duplex', the S/PDIF 16 channel is not muted again and the red light remains.

Reqeuested info:

1) Description: Ubuntu Xenial Xerus (development branch) - Release: 16.04
2) pulseaudio: 1:8.0-0ubuntu2
3) I expect the S/PDIF output to be muted until I explicitly request optical output. Even more preferable (seems to be possible at least on Mac OS X): optical out is enabled when a optical jack is inserted, otherwise it is always disabled.
4) S/PDIF light is nearly always on.

Please let me know if you require additional information. I'll attach the output of 'aplay -L' and 'amixer controls'.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Eugene Crosser (crosser)]

On my Lenovo X200s digital audio output does not even exist, put it is present in the sound settings, and every time I plug in and then pull out the headset, sound output switches to S/PDIF instead of internal speakers, and I do not hear sound at all. I guess it is the same error.

[Eugene Crosser (crosser)]

Still happens in zesty.
May be a duplicate of the bug 1521987