[xubuntu-users] no mic on sony notebook

[John Mark Clayton]

Hello All,
I used to have a working mic with dapper but it hasn't worked with
feisty.  I've been working on this off and on for a number of weeks.
Changing this and that config without success.  I booted a gutsy live
cd and the mic worked.  It has alsa 1.0.14 so I built this version
from source on the feisty install.  The mic still does not work.  All
of the same modules are getting loaded and lspci shows the same
hardware.
I don't know what is wrong, but I think a pointer to the trouble is
seen from amixer.  The amixer output shows the 'Capture' channel as
'off' even thought the level is above 0%.
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 35
  Front Left: Capture 28 [80%] [28.00dB] [off]
  Front Right: Capture 28 [80%] [28.00dB] [off]
Can anyone shed some light on this?  I'd really like to get it fixed
so I can start using skype again.
The hardware is a Sony VIAO FS760/W and lspci shows:
00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) High Definition Audio Controller (rev 03)
$ lsmod | grep snd
snd_hda_intel         262552  2
snd_pcm_oss            44672  0
snd_mixer_oss          17792  1 snd_pcm_oss
snd_pcm                81028  2 snd_hda_intel,snd_pcm_oss
snd_seq_dummy           4996  0
snd_seq_oss            35200  0
snd_seq_midi            9728  0
snd_rawmidi            25984  1 snd_seq_midi
snd_seq_midi_event      8576  2 snd_seq_oss,snd_seq_midi
snd_seq                54128  6
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              24196  2 snd_pcm,snd_seq
snd_seq_device          9612  5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd                    56324  14
snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore               8672  1 snd
snd_page_alloc         11272  2 snd_hda_intel,snd_pcm

Many thanks,
Mark Clayton
-- 
clayton256 at gmail.com