Dear Maintainer,

I am running Debian Jessie on a MacBook Pro Retina 13" from 2103. Audio works fine except for microphone input, which always stays silent, regardless of mu
ting/unmuting or volume settings or fiddling with alsamixer.
The pavucontrol vumeter for Input Devices > Built-in Audio Analog Stereo > Port:Internal Microphone stays in a zero state.

Alsamixer shows two Microphone capture devices ("Internal Microphone" and "Internal Microphone 1") while pavucontrol shows one stereo device. When I press
space on "Internal microphone 1", the input in pavucontrol appears muted. When I unmute it, the volume meter is at 100% for a fraction of a second and then
 goes down to zero. If I record directly after switching to "Internal Microphone 1", only a single "plop" noise is recorded and then silence. This does not
 happen for "Internal Microphone" where only silence is recorded.

I would expect to see a working volume meter when enabling the microphone in pavucontrol and to have working audio recording in client tools such as audaci
ty.

Thanks for looking into this or pointing to a more appropriate bug reporting place,
Cheers,
Lukas F. Hartmann (mntmn)

Hi Lucas,

I'm sorry I haven't been able to look into this. Could you try the
version of pulseaudio in experimental (5.99) and see if that works? If
not, please attach a verbose log[1] of pulseaudio when reproducing the
problem, and noting approximately when you did what (eg: approx 5
seconds after starting pa, I started pavucontrol, then muted the
input...).



[1] https://wiki.ubuntu.com/PulseAudio/Log