I'm seeing this same issue on Ubuntu 12.04 64bit on a Lenovo W520.
The WORKAROUND fixes my issue also (Selecting "Dock Microphone" from pavucontrol)
I'm seeing this same issue on Ubuntu 12.04 64bit on a Lenovo W520.
The WORKAROUND fixes my issue also (Selecting "Dock Microphone" from pavucontrol)