Intel P55 chip set sound missing

[Gary Roach <gary719_list1@verizon.net>]

Another installation problem for my new DP55KG motherboard with an 
i5-750 4 core cpu. No Sound!.

 The chipset is the P55 set and supports AC-97 and HDA protocols. I 
used the latest Debian Squeeze Network Installation Disk. Neither the 
onboard jacks or the front panel jacks work. I've checked the system 
tray audio setting and the intel HDA mixer settings and the generic 
settings. Everything seems to be OK.  Anyone have a clue as to why the 
sound doesn't work.

This is one of two problems with my Linux installation on this 
motherboard. The onboard 82578DC Lan chipset doesn't work either. I 
solved this one by adding an above board NIC.

Gary R.