Bug 70791

I did manage to get hda_analyzer to work (after hacking it to ignore some of the lines in the codec proc file for the HDMI codec which it couldn't handle). However, I haven't gotten much success. Right now I'm in a state where there's no audio output at all and I don't know what could have changed (which is why I suspect there's something not being initialized properly and so it ends up in some random state on power-up).

I've tried playing with various nodes in hda_analyzer, unmuting and increasing volume on various sliders randomly without any success. The best I got was that toggling the OUT flag on the headphone jack pin would turn on or off that crackling/popping noise on the output, but there still wasn't any audio.

It does seem like some of the widget connections that I would expect to see in the codec graph aren't set up. Though hda_analyzer seems to spew out various errors on some nodes so I don't know if that's just an issue with hda_analyzer. It seems like that tool definitely needs some work with current kernels.

you have to post the pulseaudio verbose log 

pulseaudio -vvvv

and the alsa-info of patched alsa-driver

http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths

if front headphone jack detect control return false when plugged

pulseaudio seem mute headphone playback switch in the following conf


analog-output.conf

[Element Headphone]
switch = mute
volume = zero

analog-output-desktop-speaker.conf

[Element Headphone]
switch = mute
volume = zero

analog-output-lineout.conf

[Element Headphone]
switch = mute
volume = zero

analog-output-speaker.conf

[Element Headphone]
switch = off
volume = off

the mono speaker of your business desktop is designed to share audio output node 0x2 with other pin complex 

Node 0x0c [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00 0x00] [0x80 0x80]
  Connection: 2
     0x02 0x0b

Node 0x0e [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0f [Audio Mixer] wcaps 0x20010a: Mono Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00] [0x00]
  Connection: 2
     0x02 0x0b

Node 0x17 [Pin Complex] wcaps 0x40010c: Mono Amp-Out
  Control: name="Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=1, dir=Out, idx=0, ofs=0
  Control: name="Speaker Phantom Jack", index=0, device=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00]
  Pincap 0x00010010: OUT EAPD
  EAPD 0x2: EAPD
  Pin Default 0x90170110: [Fixed] Speaker at Int N/A
    Conn = Analog, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Connection: 1
     0x0f

So I've gone back to the original state in order to see if I had mixed anything up. The summary is:

-With the default settings, I do get audio playback through the headphone and line out jacks with the PulseAudio output source set to "Analog Output". (When plugging into the headphone-only jack, the audio works although no headphones are detected in PulseAudio. When plugging into the headphone/microphone jack, PulseAudio detects headphones but I don't get any audio output from this jack. Nonetheless, using the headphone-only jack does work.)

-Unfortunately, the audio output from both headphone and line out is heavily distorted. It sounds like a form of clipping when actual audio is playing, and when the audio playback is silent it's rapid clicking/popping noises with a loud background hiss. Thus far I haven't been able to figure out much idea of where this is coming from. Testing with hda_analyzer shows that making each of these changes has these results on the output from the headphone-only jack:

Muting output amplifier on node 0x21: Audio playback muted, noise continues
Muting inputs 3/4 on mixer 0x0d: no effect
Muting inputs 1/2 on mixer 0x0d: Audio playback muted, noise continues
Changing output level of audio out node 0x03: works as expected on audio playback, no effect on noise
Changing input source on node 0x21 to 0x0c and turning up audio level on node 0x02: level on 0x02 controls audio playback level, but no effect on noise

So essentially all of the control widgets work as I would expect but unfortunately have no effect on the noise. I've renamed the bug to describe the main actual problem that prevents the audio from being usable on this machine. I'm not sure where to go from here. It seems like there is some kind of a lower-level issue with the codec setup or something. Any suggestions for anything else to try (module options? codec hints?)

your headphone plugged into mic jack won't get any audio unless  mic jack is retasked as output (i.e. pin-ctls become OUT instead of IN) 

the best way is disable jack detection by early patching

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=4b016931a997be59a2be0da3398985a19fdfa5be

+ { 0x10ec0292, 0x1028, 0, "ALC3226" },

seem you are not using latest alsa driver since ALC292 was renamed as ALC3226

Sorry for the lack of update on this. This turned out to be some kind of hardware defect on that specific machine (bad solder joints on the motherboard or something) as the noise also occurred in the audio tests in the HP diagnostic utility. The machine was swapped out with an EliteDesk 800 G1 (which seems to have similar audio hardware) and the headphone jack works fine.