[ltp] T23: ALSA doesn't record from built-in mic

[Simon Williams]

Nate Bargmann wrote:
> I have found that ALSA refuses to activate the built-in microphone on
> my T23 for recording.  I can boot KNOPPIX 5.1 with the OSS driver and
> recording works fine, but on Debian Sid with 2.6.16 and 2.6.18 kernels
> with ALSA, nadda.  I also found that ALSA does not work on the
> Slackware 10.2 partition with kernel 2.4.23.  So, apparently this may
> be a long standing bug.

I have a T23. Microphone works fine. It is exactly the same as the 
speakers- if you don't plug anything into the jack the built-in device 
is used, otherwise it is muted and the external device is used.

If it works with an external mic then the internal one will work- 
otherwise you have a broken mic.

With alsamixer use F3 and F4 to change between playback and recording 
mixers, and use space to select the capture device.

Have you tried unmuting and raising the mic volume in the playback 
section and seeing if anything comes out of the speakers?

Hope this helps
Simon