This is seen at least on HP EliteDesk 800 DM and HP EliteDesk 800 SFF.
This is used by the analog-output-headphones-2 path, but all other paths
on the same sink need to handle the element too. The existing
configuration is inconsistent between files regarding whether headphone
outputs should be muted or not when not using them. I chose to be
consistent within files, which means that Headphone,1 handling is
inconsistent between files in the same way that the existing Headphone
and Headphone2 handling is. (My opinion is that unused paths should be
always muted, but I didn't want to do that policy change in this patch.)
Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/272>
switch = mute
volume = zero
+[Element Headphone,1]
+required-any = any
+switch = mute
+volume = merge
+override-map.1 = all
+override-map.2 = all-left,all-right
+
[Element Headphone+LO]
switch = mute
volume = zero
override-map.1 = all
override-map.2 = all-left,all-right
+; This path is intended to control the first headphones, not
+; the second headphones. But it should not hurt if we leave the second
+; headphone jack enabled nonetheless.
+[Element Headphone,1]
+switch = mute
+volume = zero
+
[Element Headset]
required-any = any
switch = mute
switch = off
volume = off
+[Element Headphone,1]
+switch = off
+volume = off
+
[Element Headphone2]
switch = off
volume = off
switch = mute
volume = zero
+[Element Headphone,1]
+switch = mute
+volume = zero
+
[Element Headphone+LO]
switch = mute
volume = zero
switch = mute
volume = zero
+[Element Headphone,1]
+switch = mute
+volume = zero
+
[Element Headphone2]
switch = mute
volume = zero
switch = off
volume = off
+[Element Headphone,1]
+switch = off
+volume = off
+
[Element Headphone2]
switch = off
volume = off