Audio output settings on PS3 slim and Onkyo 605?

[jmy2469]

I moved my PS3 slim to my bedroom,and hooked it back up to my old Onkyo 605. When I checked the audio output settings, there were only 2 boxes checked, Linear PCM 2ch. 44.1kHz and Linear PCM 2ch 48kHz. How do I set this up so it reads the rest of the sound options? System is 5.1. I tried to set it manually,but it always reads the 2 settings listed above. Thanks for the help