This indeed looks like a duplicate to bug#53207. I'm using a Jetway 625EMP800 motherboard on the system I have the problem with. Disabling sound for a particular user by taking that user out of the audio group keeps the repeated sound (and any sound!) from happening, but the drumming or repeated sound still happens when the login screen is up.
(Also the default screensaver hangs the system - that may be related - I'll have to investigate that later on.) -- After installing the latest Linux kernel with Update Manager, Gnome start not normal. https://launchpad.net/bugs/52649 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
