Martin: Muting the beep control in alsamixer solved my problem.
Previously the volume of the control was set to 00 but it was not muted, and this produced the ugly and extremely loud beeps (especially on headphones). I don't know whether I have ever changed that control. But I installed a fresh karmic during Alpha 3 and have upgraded since then. -- Overuse of system beep without volume control https://bugs.launchpad.net/bugs/77010 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to libgnome in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs