Same thing here. In this case, I had a USB web cam with mic, so proving the diagnosis was easy: unplug the beast and reboot. The problem seem to break all sound, including the bell from terminals. Getting those back confirmed the diagnosis.
** Attachment added: "relevant lsusb -v output." http://launchpadlibrarian.net/36558765/sunplus.txt -- alsa-mixer.c: Your kernel driver is broken: it reports a volume range from 18.00 dB to 18.00 dB which makes no sense https://bugs.launchpad.net/bugs/410887 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
