Comment 19 for bug 1516025

Proposed solution as assisted by raymond

in /etc/modprobe.d/alsa-base.conf

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

options snd-hda-intel model=,dell-headset-multi, patch=,/lib/firmware/hdajackretask.fw

only need to fix these pin in hdajackretask.fw

0x16 0x411111f0 this remove headphone jack to allow subwoofer has bass speaker volume control

0x19 0x03a11030 this force to use mic jack instead of headphone mic of dell-headset-multi

0x1a 0x90100111 this fix the subwoofer pin

/sys/class/sound/hwC1D0/init_pin_configs:
0x12 0x99a30140
0x14 0x90170110
0x15 0x0321101f
0x16 0x03211020
0x18 0x40030008
0x19 0x03a11030
0x1a 0x411111f0
0x1b 0x411111f0
0x1d 0x41000001
0x1e 0x411111f0
0x1f 0x411111f0

/sys/class/sound/hwC1D0/driver_pin_configs:

 0x19 0x03a1913d
 0x1b 0x03a1113c

/sys/class/sound/hwC1D0/user_pin_configs:

0x16 0x411111f0
0x19 0x03a11030
0x1a 0x90100111

driver add headphone mic and headset mic

early patching
remove headphone jack
fix headphone mic to your original mic jack
add subwoofer pin