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Setup: • Retail Mountain Lion 10.8.2 • ASRock 775i945GZ • Intel Core 2 Duo E4700 • Sapphire AMD HD 5750 1Gb • 4 GB Ram DSDT: • Patched TMR, PIC, RTC, HPET, PWRB, _WAK, USB • Renamed TMR, PIC, COPR, USB0, USB1, USB2, USB3, EUSB to TIMR, IPIC, MATH, UHC1, UHC2, UHC3, UHC4, EHC1 • Added SBUS device Working: • Audio - ALC888 with DSDT patch & patched AppleHDA.kext • Video - Full QE/CI/Resolution by adding device id to ATI5000Controller.kext & AMDRadeonAccelerator.kext and DSDT patch (for 10.8.2 had to roll back to 10.8.0 ATI5000Controller.kext) • Ethernet - Added AppleRTL8139Ethernet.kext to IONetworkingFamily.kext/Contents/Plugins/ and DSDT patch for built-in Kinda Working: • Sleep - Sleep works, but the fans remain running for about 30 seconds and then turn off (system is asleep). When system wakes (by keyboard key or mouse click) it takes about 5 to 10 minutes for the monitor to wake up and for the USB devices to get power (USB device used to wake has power, others don't). Sometimes sleeping the system a second time does not work and results in black screen with fans still running. Additionally, I have to patch AppleRTC.kext to prevent a CMOS reset when waking from sleep. I have attached my DSDT. 775i945GZ dsdt.aml.zip Anyone able to help me figure out what is wrong with sleep on this machine