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GA-z68-UD3H-B3 Sleep/Wake?

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Hi all,

I did do a forum search and came up with zero results for "GA-Z68-UD3H, Mountain Lion, Sleep"


I have a GA-Z68-UD3H-B3 board on U1h BIOS.


SAM 830 256 SSD

8GB HyperX 1600Mhz RAM


I cannot get sleep/wake to work.

Also, neither does shutting down the computer from the menu bar > shut down.


In either of those instances, the monitor goes off and the computer stays on but goes unresponsive.


Reseting the computer via the menu bar works, but not sleep or shut down.


Anyone know what could be causing this?


I have a minimally modified DSDT just for HDMI audio (working correctly)

FakeSMC is installed

NullCPUPower - not installed


Only other things installed are a Realtek audio driver (Lnx2Mac via #####)


A pretty vanilla system basically.


One other thing, sleep and shut down worked fine on F12 BIOS, but since moving to the new UEFI BIOS they are not working.

I did a complete reinstall after updating the BIOS.



Thanks for any help!

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