@Laszlo: I experienced exactly the same issue you described with my Sennheiser PC 155 USB Headset although I didn't install the backports module at all. I will provide error logs as soon as I'm back at home on Tuesday.
-- Lenovo Thinkpad X201 & T410 & W510 not autoswitching to input mic jack in 10.04 https://bugs.launchpad.net/bugs/557742 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