Another clue: I did the following
$ rm -rf ~/pulse $ rm -rf ~/.gstreamer-0.10 $ sudo /sbin/alsa force-reload I head short quiet buzzing sounds coming from the speakers. I also hear that sound if I do $ killall pulseaudio -- [CA0106 - CA0106] ALSA test tone not correctly played back https://bugs.launchpad.net/bugs/671178 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