At Tue, 1 Sep 2009 14:59:13 +0200, Jure Koren wrote:
Hi!
I've received a Vaio P netbook recently, which contains an ALC262 of an unknown model. Playback generally works out of the box, but I haven't yet managed to raise the capture level for the internal microphone (though it's easy to rev up the passthrough channel which makes a nice white noise without any feedback).
What I'd like to know is how difficult would it be for me to actually get test out more channels than are available with any particular model= parameter setting. Some other chipsets include model=test or model=debug, but not this one. Also, is there a tool that could help me probe around the chipset to properly identify available mixer channels?
You can reassign pins via sysfs and let the driver reconfigure. See $LINUX/Documentation/sound/alsa/HD-Audio.txt for details. The latest version is found at below, too: http://ftp.kernel.org/pub/linux/kernel/people/tiwai/docs/
But, I guess there is no any other channels (if you are speaking about PCM). ALC262 barely supports multi channels. Or, if you are looking for other active I/O pins, then you can poke with hda-verb, too.
Takashi