Hello All,

The new Vaio F series has a Realtek ALC 275, which is currently setup in patch_realtek.c to use the 269 configuration. Unfortunately this does not correctly enable the internal microphone, and the line-in is not tied to any mixer control. The attached file will enable the internal microphone, but will do so at the expense of the line-in.

According to Takashi, "The problem is that the digital-mic of pin 0x12 has the exclusive connection to the selector 0x22, followed to ADC 0x11, while other analog input pins are connected to 0x23/0x24, to ADC 0x08/0x09. Thus, the driver requires the dynamic switching of ADCs, which isn't fully guaranteed to work. A similar situation is found for Conexant codecs, and a same style hack would be needed for the realtek codec."

This bug is being tracked here: http://code.google.com/p/vaio-f11-linux/issues/detail?id=2 and here: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4909 .

I'm wondering if anyone has any advice on how to implement the necessary dynamic ADC switching.

Thanks, Jason Donenfeld