This appears to be fixed in Lucid. Are you able to test?
** Changed in: alsa-driver (Ubuntu)
Status: New = Confirmed
** Summary changed:
- microphon don't work
+ Analog input doesn't work with CA0106 (SB Audigy SE)
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Analog input doesn't work with CA0106 (SB Audigy SE)
** Attachment added: AlsaDevices.txt
http://launchpadlibrarian.net/35684720/AlsaDevices.txt
** Attachment added: AplayDevices.txt
http://launchpadlibrarian.net/35684721/AplayDevices.txt
** Attachment added: ArecordDevices.txt
http://launchpadlibrarian.net/35684723/ArecordDevices.txt
See:
Simple mixer control 'Analog Source',0
Capabilities: cenum
Items: 'Phone' 'Mic' 'Line in' 'Aux'
Item0: 'Line in'
Set this to Mic
Simple mixer control 'Shared Mic/Line in',0
Capabilities: cenum
Items: 'Line in' 'Mic in'
Item0: 'Line in'
Set this to Mic