No subject

Alsa gives three capture controls:
* Mic Boost - probably boosts something, but no audible effect (with my ears);
* Capture - controls the internal mic.
* Capture 1 - controls nothing.

Pulseaudio gives one two-channel control.

With alsa applications everything works as expected - the mic works, records in
two-channel mode. Eg., in gnome-sound-recorder.

In pulsaudio the capture records nothing with capture level up on both
channels. More interestingly, the actual volume seems to be the difference
between the channels' volumes. Eg., if left channel is set to 0 in alsamixer
and right channel is set to 100, sound is loud, in combination 0-50 - half of
previous.

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