Since no one has come forth, I will take a shot at this.
Try ensuring sound works before hibernation, then put it down and bring it back up.
Check again, if it does not work open a shell and type # aplay -l (lower case L) see if the card is recognized.
If so then it's something else. If not then then you will need to try to probe it with # modeprobe snd-insertsoundcarddriverhere.
Check the alsa webpage under drivers to find yours specific one, if you don't know.
Use lspci as well.
Report back if you get anything on this.
It would also be nice if someone else could verify this.