I have now got a patch committed into upstream ALSA, but not the 12.04 kernel. That means the following:
1) You can use the https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS way to upgrade your sound drivers. (They are currently building, but should have finished building by the time you read this hopefully)
2) After a reboot, go into alsamixer and make sure the new "Inverted Internal Mic" control is muted.
I have now got a patch committed into upstream ALSA, but not the 12.04 kernel. That means the following: /wiki.ubuntu. com/Audio/ UpgradingAlsa/ DKMS way to upgrade your sound drivers. (They are currently building, but should have finished building by the time you read this hopefully)
1) You can use the https:/
2) After a reboot, go into alsamixer and make sure the new "Inverted Internal Mic" control is muted.