Same problem for me. I have a Toshiba U305-S2804. I recently upgraded to 10.04 (via fresh install, not upgrade), and suddenly Ubuntu doesn't recognise my external mic. In sound preferences, I have no option to choose between inputs.
I upgraded ALSA to 1.0.23 last night (compiled from the source). But when I look at the sound options of Skype, for example, they give PulseAudio as the only sound option. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/577409 Title: Ext. microphone missing from sound preferences 10.04 LTS -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs