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* Thinkpad T400 - internal mic doesn't work, can't set CAPTURE - schematics included
@ 2013-02-27 17:58 Arkadiusz Miśkiewicz
  2013-02-28  9:28 ` David Henningsson
  2013-02-28 11:30 ` Raymond Yau
  0 siblings, 2 replies; 6+ messages in thread
From: Arkadiusz Miśkiewicz @ 2013-02-27 17:58 UTC (permalink / raw)
  To: alsa-devel


Hi,

My Thinkpad T400 (2764CTO model) doesn't have ability to set CAPTURE on 
microphone inputs with alsa. Most likely some quirk is missing.

The laptop has internal microphone, microphone in input, headphones out output 
and 2 internal speakers. That's all.

Is uses Conexant CX20561_15Z internally and there is detailed T400 schematic 
available:
http://kythuatphancung.com/download/lenovo-thinkpad-t400-schematic-
diagram.html?dl
(for audio look around page 43).

Kernels 3.7.x, fresh 3.8 - no luck. Tried even linux-next from today but it 
dies early on alsa unrelated issues.

I've tried model options laptop, hp, hp-dv6736, hp-700, toshiba, ideapad, 
auto. None of these work fine. With model=hp-700 I can set CAPTURE but it 
doesn't work (silent audio is captured using arecord or in google hangout). 
External mic connected also doesn't work with these setups.

http://www.alsa-project.org/db/?f=394ff4cdca33e75c8a47203d42b89d8de36deca7 
[3.8 kernel]

http://www.alsa-project.org/db/?f=302877e50f99835075d038207f6db0dfd89873b0 
[3.7 kernel]

Thinkpad is 2764CTO model exactly. 

I can test various hacks, patches etc easily. Could someone look at schematic 
and provide quirks to test?

Thanks!
-- 
Arkadiusz Miśkiewicz, arekm / maven.pl
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^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2013-03-01 14:52 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-02-27 17:58 Thinkpad T400 - internal mic doesn't work, can't set CAPTURE - schematics included Arkadiusz Miśkiewicz
2013-02-28  9:28 ` David Henningsson
2013-02-28 17:23   ` Arkadiusz Miśkiewicz
2013-02-28 19:25     ` David Henningsson
2013-03-01 14:52     ` Raymond Yau
2013-02-28 11:30 ` Raymond Yau

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