Microphone does not work

[Peter2121]

My microphone does not work.
I can see it in mixer, the level is correct. If I try to record any sound I have nothing but small noise. The sound works in any program, the microphone works fine under Windows.
Where should I search?

[Peter2121]

It seems that the problem is at the soundcard detection level. There are four cards detected - two NVIDIA cards (probably, for HDMI sound, I did not tested it) and two Intel cards. So, four mixers in system. With the second mixer (sysctl hw.snd.default_unit=2, default) I can playback correctly but I cannot use microphone. With the third mixer (sysctl hw.snd.default_unit=3) I can use microphone for recording (it works!!) but I cannot playback.

Any ideas?

[Peter2121]

Finally I've got help in FreeBSD forum.

In order to get it working one must expose to ALSA all the existent devices. It can be done by modifying the /compat/linux/etc/alsa/pcm/pcm-oss.conf file. In my case the file modified is:

# PCBSD pcm-oss plugin configuration

pcm.oss {
	type oss
	device /dev/dsp
	hint {
		description "Open Sound System"
	}
}

ctl.oss {
	type oss
	device /dev/mixer
	hint {
		description "Open Sound System"
	}
}

pcm.oss0 {
	type oss
	device /dev/dsp0
	hint {
		description "Open Sound System dsp0"
	}
}

ctl.oss0 {
	type oss
	device /dev/mixer0
	hint {
		description "Open Sound System mixer0"
	}
}

pcm.oss1 {
	type oss
	device /dev/dsp1
	hint {
		description "Open Sound System dsp1"
	}
}

ctl.oss1 {
	type oss
	device /dev/mixer1
	hint {
		description "Open Sound System mixer1"
	}
}

pcm.oss2 {
	type oss
	device /dev/dsp2
	hint {
		description "Open Sound System dsp2"
	}
}

ctl.oss2 {
	type oss
	device /dev/mixer2
	hint {
		description "Open Sound System mixer2"
	}
}

pcm.oss3 {
	type oss
	device /dev/dsp3
	hint {
		description "Open Sound System dsp3"
	}
}

ctl.oss3 {
	type oss
	device /dev/mixer3
	hint {
		description "Open Sound System mixer3"
	}
}

Now I can choose different devices in Skype - one for playback and another - for microphone.
So, it's OK for playback and microphone now.

[sg1efc]

Thank you very much Peter2121. Found your thread at FreeBSD forum and was able to get mine working also, thanks to mav@'s information.

Info at this link:
http://forums.freebsd.org/showpost.php?p=158948