[pulseaudio-tickets] [Bug 91471] Pulseaudio enables Surround 4.0, while chmap reports no RL and RR

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91471

--- Comment #1 from Arthur Borsboom <arthurborsboom at gmail.com> ---
The analysis of Raymond Yau (alsa dev) based on my pulseaudio log. Maybe this
helps to find the cause and solution.


(   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

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