Indeed the sound is working with kernel 2.6.20-6.11. I tested both the 2.6.20-6-generic and the 2.6.20-6-lowlatency version, and both are doing fine with sound. Both also fine with nvidia driver for graphic.
Suspend and Hibernate have issues; see my extension to bug report #81137 -- no soundcard on NVIDIA NF-6100-405 chipset https://launchpad.net/bugs/81024 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
