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

[Raymond Yau]

>
> At this moment the headset works this way: I plugin the headset, I change
the input source from Internal Microphone to Microphone and I can start
using the headset. There is no popup.
>
> The sub woofer works on Pulseaudio setting "Stereo" and "Surround 4.0",
but not on "Surround 2.1".

Refer to your pulseaudio verbose log

(   6.509|   1.381) D: [pulseaudio] module-alsa-card.c: Jack 'Headphone Mic
Jack' is now plugged in
(   6.509|   0.000) D: [pulseaudio] device-port.c: Setting port
analog-output-headphones to status yes

This look like pulseaudio use headphone mic jack to set the headphone to
available

(   6.509|   0.000) D: [pulseaudio] module-switch-on-port-available.c:
Finding best profile
(   6.509|   0.000) D: [pulseaudio] module-switch-on-port-available.c: No
suitable profile found
(   6.509|   0.000) D: [pulseaudio] device-port.c: Setting port
analog-input-headphone-mic to status unknown

(   6.509|   0.000) D: [pulseaudio] core-subscribe.c: Dropped redundant
event due to change event.
(   6.509|   0.000) D: [pulseaudio] device-port.c: Setting port
analog-input-headset-mic to status unknown

But I don't understand why pulseaudio set status of headphone mic and
headset mic to unknown

You did not use External Subwoofer Jack to change the status of external
subwoofer, there is no traces of external subwoofer jack in your log