gigabyte GA-H55M-UD2H v11, unable to get sleep working.

Hey there, this is my second build, this time on the H55M-UD2H for a friend.

Everything seems to be working well, except for sleep.

I'm using the DSDT from here, MultiBeast 3.9.0 with these settings below.

InstallerScreenSnapz004.jpg
InstallerScreenSnapz005.jpg


As several folks had used similar settings on this mobo in this thread about MultiBeast config snapshots


Checking this thread, I tried enabling quickboot in my bios, but still no luck.

booting in verbose mode, pressing my power button led to this message:
Sleep prevented by SB 1, SS 0, AS 1

Any thoughts? I've seen a ton of conflicting info for this board. Thanks!

Woo! figured it out, it was the graphics card.

I have now updated to a GeForce GT 220 1gb card, sleep works just fine. Had no idea the GT 520 card was an issue.