Hi!
I installed a clean system:
(GA p55-UD2, intel i5)
F10 bios, F10 DSDT
LegacyHDA ALC887/888b
R1000SL
com.apple.boot.plist:32bit Apple Boot screen
smbios.plist: iMac i5
Thats all, i've installed, everithing works, but:
After 10-15 seconds, if no sound plays, i hear a noise from the (front)...