any reason to use dell-BIOS sine this disable Jack detection of Mic jack
0x0e 0x02a79130
Sysfs Files
!!-----------
/sys/class/sound/hwC0D2/init_pin_configs:
0x0a 0x0221101f
0x0b 0x40f000f1
0x0c 0x40f000f7
0x0d 0x90170110
0x0e 0x02a11020
0x0f 0x02011030
0x10 0x40f000f2
0x11 0x40f000f3
0x12 0x40f000f4
0x13 0x90a6012e
0x14 0x40f000f5
0x21 0x985610a0
0x22 0x40f000f6
/sys/class/sound/hwC0D2/driver_pin_configs:
0x0f 0x0221101f
0x0e 0x02a79130
try latest alsa driver which don't create three capture devices
ARECORD
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC9228 Analog [STAC9228 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 2: STAC9228 Alt Analog [STAC9228 Alt Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Simple mixer control 'Input Source',0
Capabilities: cenum
Items: 'Internal Mic' 'Mic'
Item0: 'Internal Mic'
Simple mixer control 'Input Source',1
Capabilities: cenum
Items: 'Internal Mic' 'Mic'
Item0: 'Internal Mic'
Simple mixer control 'Input Source',2
Capabilities: cenum
Items: 'Internal Mic' 'Mic'
Item0: 'Internal Mic'
** Changed in: alsa-driver (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1355247
Title:
STAC9228 / Dell XPS M1530 / Mic needs a boost, very low signal
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