No wake from sleep ( I know it's everywhere on the forum-need some guidance)

[RandomNumber]

My system is an old Ex58 ud3r with an Xeon5650 CPU and an Asus Radeon RX580 8GB. I've installed Monterey 12.4 (21F79) booting with Open Core .0.8.1. I am using SMBIOS 18,1 (I know MacPro 6,1 is recommended but I could never get it to function).

Everything seems to work fine except sleep and restart. Obviously this is a minor issue that has plagued users from the beginning. I've just been functioning with scheduled shutdown and start up as a work around. The problem is when someone accidentally or unknowingly uses sleep. It causes some problems requiring entering the BIOS and re-selecting the proper profile in order to start up properly again.

I've searched the site and found many possible solutions...too many to make any sense of a path forward for my awkward (yet mostly functioning) system. I'm hoping someone might help guide me to a solution.

BTW, if I set Energy Saver settings to only 'Prevent your Mac from automatically sleeping when display is off' I get partial wake from whatever sleep state that is, but fans never stop.

 

[etomote]

Hi, sorry had to reedit my post, apparently this seems to be more correct answer for your problem.
Since you're also on X58 system I think this should work.

Just follow exactly what this dortania guide says and it should work.
Fixing Sleep Problem <--- click the link.

It worked for me on P6X58D-E, perfect sleep/wake working.

Cheers