[alsa-devel] [ALC668]: Asus N751JK - Incorrect default pin assignment for external base speaker and external microphone not working

[Arthur Borsboom]

"hdajacksensetest -a" gives

Pin 0x05 ( Digital Out, HDMI): present = No
Pin 0x06 ( Digital Out, HDMI): present = No
Pin 0x07 (Not connected): present = No

which is a bit of a surprise to me, since at least the headphones (of the
headset I plugin) has working jack detection. I would expect to see at
least to have 1 non-HDMI pin connected.

----

> Can user giveup some combo jack capability (remove the support of
headphone and mic jack and only support headset ) by early patching to
reenable auto mic selection ?

To this I don't know the answer.

An image of the side with the different jacks:
http://www.notebookcheck.net/fileadmin/Notebooks/Asus/N751JK-T4144H/rechts.jpg

The yellow is the external speaker
The one next to the USB ports is the headset with a logo of a headset and a
microphone drawn in it.


On 2 July 2015 at 18:34, Raymond Yau <superquad.vortex2 at gmail.com> wrote:

>
> >
> > While being in the process of making my audio work on my new notebook, I
> > noticed that the audio hardware is partially working
> > out-of-the-Linux-kernel-box v4.0.7 Arch. The following two things seem
> not
> > to work.
> >
> > --------------------------------
> > 1. External base speaker
> > --------------------------------
> >
> > The Asus N751JK notebook (ALC668) has a small external 'base' speaker
> (jack
> > 2,5mm 4 rings), which I only can get to work with the help of
> hdajackretask
> > with the following setting:
> >
> > * Override unconnected pin 0x1a and connect it to Internal Speaker (LFE).
>
> Can the external subwoofer be detected by any pin complex jack sense  when
> plug and unplugged ?
>
> hdajacksensetest -a
>
> Since you are not always carry the external subwoofer and  can save  cpu
> power not to perform lfe filtering when subwoofer is not plugged
>
> >
> > In the sound kernel tree I have noticed PCI ID fixes which are more or
> less
> > equal to this situation.
> >
> https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/hda/patch_realtek.c
> >
> > This SND_PCI_QUIRK definition looks a lot like it:
> > SND_PCI_QUIRK(0x1043, 0x11cd, "Asus N550", ALC662_FIXUP_BASS_1A),
> >
> > The Vendor/PCI ID is different for this laptop and I guess a new line
> > should be added something like this:
> > SND_PCI_QUIRK(0x1043, 0x17bd, "Asus N751JK", ALC662_FIXUP_BASS_1A),
> >
> > --------------------------------
> > 2. External microphone
> > --------------------------------
> >
> > The Asus N751JK notebook (ALC668) has a 3,5mm 4-ring combo jack for
> > headphones and microphone.
> > The headphone is detected correct and auto-mute works good (jack
> detection).
> > The microphone is not detected and does not work.
> >
> > I was unable to get it to work with hdajackretask or any of the Asus
> model
> > settings, such as:
> > * options snd_hda_intel model=,asus-mode4
> >
> > I was able to get the microphone to work with the following setting:
> > * options snd_hda_intel model=,dell-headset-multi
> >
> > This setting creates two new items in PulseAudio making a total of three:
> > * Internal microphone (works out of the box)
> > * Headset microphone (works indeed with a headset)
> > * Microphone (don't know if this works, since I don't have a single
> > microphone, but it does not work with the headset)
>
> Seem user manual mention external mic is supported
>
> If codec cannot differentitate headphone, headset or mic, you need
> manually switch the role of the combo jack from default headphone to
> headset everytime when you plugged your headset
>
>
> http://voices.canonical.com/david.henningsson/2014/03/07/headset-jacks-on-newer-laptops/
>
> Can user giveup some combo jack capability (remove the support of
> headphone and mic jack and only support headset ) by early patching to
> reenable auto mic selection ?
>
> >
> > Unfortunately the auto-input-device-switch to the Headset microphone does
> > not seem to work.
> > When I plugin a headset, the headphones get detected and the Internal
> > speakers are muted.
> > The Input device does not automatically switch from Internal microphone
> to
> > Headset microphone.
> > I have to do this manually, after which it works.
> > I don't know if the microphone has a jack detection.
> > If it does not, maybe it is possible to use the headphones jack
> detection?
> >
> > I have added the alsa-info without any snd_intel / alsa modifications
> here:
> >
> http://www.alsa-project.org/db/?f=0b5135bd12f28bb5cb182f83bfa21bc50022faa6
> >
> > I don't mind to help to test, for example module options, patches and/or
> > compile kernels.
> >
>



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