I've tested mainline kernel (http://kernel.ubuntu.com/~kernel-ppa/mainline/) v2.6.32.16-lucid, v2.6.32.18-lucid, v2.6.32.20-lucid and can confirm that sound works fine in all.
I've tested mainline kernel (http:// kernel. ubuntu. com/~kernel- ppa/mainline/) v2.6.32.16-lucid, v2.6.32.18-lucid, v2.6.32.20-lucid and can confirm that sound works fine in all.