looks like this has been fixed in newer versions of alsa - i downloaded
this version: http://ftp.kernel.org/pub/linux/kernel/people/tiwai/alsa
/alsa-driver/alsa-driver-20101221.tar.gz and compiled and installed
(./configure; make; make install) and now my mic works all the time,
even after a reboot. i think the relevant fix is in the file alsa-
driver/sound/pci/hda/patch_conexant.c:
/* Node 14 connections: 0x17 0x18 0x23 0x24 0x27 */
{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0) | 0x50},
{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(1)},
{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(2) | 0x50},
{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(3)},
{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(4)},
{0x14, AC_VERB_SET_CONNECT_SEL, 2}, /* default to internal mic */
taking a look at a diff with the older version of alsa, you can see the
AC_VERB_SET_CONNECT_SEL changed from 1 to 2:
2822c2944
< {0x14, AC_VERB_SET_CONNECT_SEL, 1}, /* default to internal mic */
---
> {0x14, AC_VERB_SET_CONNECT_SEL, 2}, /* default to internal mic */
if you dont want to go down that path, consider installing snd-hda-tools
(add repos "deb http://ppa.launchpad.net/diwic/ppa/ubuntu lucid main"
and "deb-src http://ppa.launchpad.net/diwic/ppa/ubuntu lucid main") and
then use hda-verb to change the settings previously changed using hda-
analyzer. you will need to figure out the options for hda-verb, i worked
out how to change the audio selector:
$ sudo hda-verb /dev/snd/hwC0D1 0x14 SET_CONNECT_SEL 0
see the following ubuntu post for ideas on setting up a script to
automate hda-verb:
http://ubuntuforums.org/showpost.php?p=9826074&postcount=121
id go with installing the newer version of alsa though...
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https://bugs.launchpad.net/bugs/590756
Title:
Lenovo G560 autoswitch headphone + mic not working
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