[alsa-devel] getting the sound to work on my asus m6s00v

[Raymond Yau]

>
> I have done a couple of things
> First I left the laptop off with no power connected;
> This made the laptop awake in the non functional state regarding the
soundcard.
> I then used this opportunity to update to the latest kernel.
>
> With the latest kernel, the sound is still not working.
> Unmuting the S/PDIF in alsamixer turn on red light in the headphone jack.
>
> also, using 3stack-digout option doesn't bring back sound.
>
> This is the output from the alsa information tool
> http://www.alsa-project.org/db/?f=df46a9ee01e04dde11b194e0278c9f22594540d0
>
> after updating this is the output from various commands
>
> [
> Nothing plugged in:
> ./hdajacksensetest -a
> Pin 0x14 (Green Headphone, Rear side): present = No
> Pin 0x15 (Not connected): present = No
> Pin 0x16 (Not connected): present = No
> Pin 0x17 (Not connected): present = No
> Pin 0x18 (Internal Mic): present = Yes
> Pin 0x19 (Not connected): present = No
> Pin 0x1a (Not connected): present = Yes
> Pin 0x1b (Not connected): present = No
> Pin 0x1c (Not connected): present = No
> Pin 0x1d (Not connected): present = No
> Pin 0x1e (Internal SPDIF Out, Mobile-In): present = No
> Pin 0x1f (Not connected): present = No
>
> ./hda-verb /dev/snd/hwC0D0 0x1{4,5,8} SET_PIN_SENSE 0 nid
> nid = 0x14, verb = 0x709, param = 0x0
> value = 0x0
>
> nid = 0x15, verb = 0x709, param = 0x0
> value = 0x0
>
> nid = 0x18, verb = 0x709, param = 0x0
> value = 0x0
>
> ./hda-verb /dev/snd/hwC0D0 0x1{4,5,8} GET_PIN_SENSE 0 nid
> nid = 0x14, verb = 0xf09, param = 0x0
> value = 0x80001f41
>
> nid = 0x15, verb = 0xf09, param = 0x0
> value = 0x80001f41
>
> nid = 0x18, verb = 0xf09, param = 0x0
> value = 0x7fffffff
> ]
>
> [
> With headphone plugged in
> ./hdajacksensetest/hdajacksensetest -a
> Pin 0x14 (Green Headphone, Rear side): present = No
> Pin 0x15 (Not connected): present = Yes
> Pin 0x16 (Not connected): present = No
> Pin 0x17 (Not connected): present = No
> Pin 0x18 (Internal Mic): present = Yes
> Pin 0x19 (Not connected): present = No
> Pin 0x1a (Not connected): present = Yes
> Pin 0x1b (Not connected): present = No
> Pin 0x1c (Not connected): present = No
> Pin 0x1d (Not connected): present = No
> Pin 0x1e (Internal SPDIF Out, Mobile-In): present = No
> Pin 0x1f (Not connected): present = No
>
> // and also ecact same output for hda-verb as with nothing plugged in
> ]
>
> [
> with Mic plugged in, the following items changed
>
> ./hdajacksensetest/hdajacksensetest -a
> Pin 0x14 (Green Headphone, Rear side): present = Yes
> Pin 0x15 (Not connected): present = Yes
> Pin 0x16 (Not connected): present = No
> Pin 0x17 (Not connected): present = No
> Pin 0x18 (Internal Mic): present = Yes
> Pin 0x19 (Not connected): present = No
> Pin 0x1a (Not connected): present = Yes
> Pin 0x1b (Not connected): present = No
> Pin 0x1c (Not connected): present = No
> Pin 0x1d (Not connected): present = No
> Pin 0x1e (Internal SPDIF Out, Mobile-In): present = No
> Pin 0x1f (Not connected): present = No
>
> ./hda-verb /dev/snd/hwC0D0 0x15 GET_PIN_SENSE 0 nid
> nid = 0x15, verb = 0xf09, param = 0x0
> value = 0x7fffffff
>
> ./hda-verb /dev/snd/hwC0D0 0x18 GET_PIN_SENSE 0 nid
> nid = 0x18, verb = 0xf09, param = 0x0
> value = 0x80001f41

Seem impedance measurement is not correct, mic should have higher impedance
than headphone

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/Documentation/sound/alsa/HD-Audio.txt

You can disable it by hint trigger_sense=0

- trigger_sense (bool): indicates that the jack detection needs the
  explicit call of AC_VERB_SET_PIN_SENSE verb

Node 0x14 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Control: name="Master Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Control: name="Headphone Mic Phantom Jack", index=0, device=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x0000003f: IN OUT HP Detect Trigger ImpSense
  Pin Default 0x0121411f: [Jack] HP Out at Ext Rear
    Conn = 1/8, Color = Green
    DefAssociation = 0x1, Sequence = 0xf
    Misc = NO_PRESENCE
  Pin-ctls: 0xc0: OUT HP
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0c

To get back headphone phantom jack if HP is really shared with speaker

Disable hp mic by hint  hp_mic_detect=0

- hp_mic_detect (bool): enable/disable the hp/mic shared input for a single
built-in mic case; default true