The solution from #58 does not work for me (on a Thinkpad X300).
I still have the same catch-22 situation as described in #47.
The packet linux-backports-modules-alsa-2.6.31-19-generic is installed and I rebooted.
uname -a
Linux x300 2.6.31-19-generic #56-Ubuntu SMP Thu Jan 28 01:26:53 UTC 2010 i686 GNU/Linux
The solution from #58 does not work for me (on a Thinkpad X300). -modules- alsa-2. 6.31-19- generic is installed and I rebooted.
I still have the same catch-22 situation as described in #47.
The packet linux-backports
uname -a
Linux x300 2.6.31-19-generic #56-Ubuntu SMP Thu Jan 28 01:26:53 UTC 2010 i686 GNU/Linux
lspci | grep -i audio
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
Also noteworthy could be that I suspect that the Thinkpad X300 contains a 'digital' MEMS microphone.