fix laptops 4 pin 3.5mm microphone is not detected issue

created: 20241117 updated: 20241117 authors: alick97

see Correctly detect microphone plugged in a 4-pin 3.5mm xxx_jack) in alsa(Advanced Linux Sound Architecture) document.

fix my acer aspire E1-570G laptops step by step

• my linux use alsa sound system and can play sound but can not use microphone.

• list sound card and found use device ALC282

  aplay -l
  

  *** List of PLAYBACK Hardware Devices ****
  card 0: PCH [HDA Intel PCH], device 0: ALC282 Analog [ALC282 Analog]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  

• find alc282 driver for pc acre aspire e1 visit https://docs.kernel.org/sound/hd-audio/models.html and find ALC22x/23x/25x/269/27x/28x/29x (and vendor-specific ALC3xxx models) title. This one acer-aspire-e1 (Acer Aspire E1 fixups) is for my pc.

• add line to /etc/modprobe.d/alsa-base.conf

  options snd-hda-intel model=acer-aspire-e1
  

• reboot