Newbie here, so please excuse anything trivial I may have missed.

I have a Acer Aspire V15 Nitro Black Edition VN7-592G. I have installed Ubuntu 14.04 on it, and it is working mostly fine.

One thing I didn't get to work is the built-in microphone. I tried all the solutions involving changes in alsa-base.conf, to no avail. I also tried installing pavucontrol, but I could not see my microphone in the interface.

Right now, in my sounds setting, I have:

* with my headphones (no mic) on: headphones/analog input (no speakers option)
* with my headphones off: speakers/analog input

Both headphones and speakers work fine, but the analog input shows no signs of activity.

Anyone has any idea how I can get this to work?

This is what `sudo aplay -l` returns:

```
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC255 Analog [ALC255 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
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

```