There are a number of bugs with similar symptoms, no sound after resume: bug #96230, bug #21574, bug# 94036. Noting them here in case they are related.
-- Only headphones work after suspend on HP nx8220 https://launchpad.net/bugs/21574 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
