even quicker workaround: sudo cp /lib/modules/2.6.24-11-generic/kernel/sound/soundcore.ko /lib/modules/2.6.24-12-generic/kernel/sound/ sudo depmod -a sudo modprobe snd-hda-intel (or whatever you need)
and sound works again :)
even quicker workaround: 2.6.24- 11-generic/ kernel/ sound/soundcore .ko /lib/modules/ 2.6.24- 12-generic/ kernel/ sound/
sudo cp /lib/modules/
sudo depmod -a
sudo modprobe snd-hda-intel (or whatever you need)
and sound works again :)