I can confirm that this bug still occurs using the kernel version 3.6.0-030600rc4-generic_3.6.0-030600rc4.201209011435 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-rc4-quantal/ .
The internal stereo microphone doesn't react and built-in 5.1 speakers are recognized as 4.0
I can confirm that this bug still occurs using the kernel version 3.6.0-030600rc4 -generic_ 3.6.0-030600rc4 .201209011435 from http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.6-rc4- quantal/ .
The internal stereo microphone doesn't react and built-in 5.1 speakers are recognized as 4.0