Also when I run Ubuntu 12.04 Beta 1 from a live USB then the sound is fine, but when I made a clean install onto the HDD then the sound problem is still there.
This distorted sound issue is also seemingly having effect on the system responsiveness. On the HDD installation sometimes clicks don't register and keys get stuck (system doesn't register that the key was released). All in all it is a pretty annoying experience running Ubuntu at the moment.
Also when I run Ubuntu 12.04 Beta 1 from a live USB then the sound is fine, but when I made a clean install onto the HDD then the sound problem is still there.
This distorted sound issue is also seemingly having effect on the system responsiveness. On the HDD installation sometimes clicks don't register and keys get stuck (system doesn't register that the key was released). All in all it is a pretty annoying experience running Ubuntu at the moment.