I confirm this issue on a Lenovo X300 6478. The tip given by Jack Lecou works for me on both Karmic Koala and Lucid Lynx Alpha 2, either in 32 bits or 64 bits.
I confirm the same misbehavior while selecting the "Internal Analog Stereo" device. (hope that helps :)) -- Pulseaudio refuses to use internal microphone input (Lenovo X300) https://bugs.launchpad.net/bugs/434520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs