(   0.087|   0.000) D: [pulseaudio] alsa-mixer.c: Probing path 
'analog-output-speaker'
(   0.087|   0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Hardware 
Master' succeeded (volume=0, switch=0, enumeration=0).
(   0.087|   0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Master' 
succeeded (volume=1, switch=1, enumeration=0).
(   0.087|   0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Master 
Mono' succeeded (volume=0, switch=0, enumeration=0).
(   0.088|   0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Headphone' 
succeeded (volume=3, switch=1, enumeration=0).
(   0.088|   0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Headphone2' 
succeeded (volume=0, switch=0, enumeration=0).
(   0.088|   0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Speaker' 
succeeded (volume=0, switch=0, enumeration=0).
(   0.088|   0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Desktop 
Speaker' failed.

since the volume control at node 0x13 is shared by dock line out and
internal speaker

the pulseaudio speaker path does not contain pcm playback volume


http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths/analog-output-speaker.conf


(   0.089|   0.000) D: [pulseaudio] alsa-mixer.c: Removing path 'analog-output' 
as it is a subset of 'analog-output-speaker'.


your case are similar to 

https://bugs.freedesktop.org/show_bug.cgi?id=70865

line out and internal speaker share a volume control, pulseaudio don’t
include pcm in speaker path

** Bug watch added: freedesktop.org Bugzilla #70865
   https://bugs.freedesktop.org/show_bug.cgi?id=70865

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https://bugs.launchpad.net/bugs/1275198

Title:
  [HP EliteBook 8560w, IDT 92HD81B1X5, Speaker, Internal] No sound at
  all

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