Hi guys. I'm in the same situation. I have a nx7300 (dsdt dump says nx7400) and cpus=1 is the only option for me. iDenem, iPC and iAtkos - no difference.

I also think our bios/dsdt is total screwed.

So far the only solution is starting on battery and when the freez comes to plug ac in. Credit goes to someone on some other popular forum

This work-around isn't getting me anywhere.

My observations. Sometimes (when using dual cores) the halt comes at boot (some bad calls to second cpu) and sometimes after 5-15 minutes after reaching desktop. Today i have noticed that actually the only thing that freezes is the mouse.... (both usb and touchpad - using Voodoo ps/2 here) and the keyboard is working! Pressing the power button brings up the window (sleep, reboot, shutdown, etc) but then i cannot use the keyboard anymore.

The reason i think bios/dsdt is broken is that when using linux i also get some strange side effects - the worst being lcd shutting down - i mean it stays lit up but completely black - only a restart helps. It also happens in windows and in both of those cases it is when i'm using the battery.

Yeasterday i was taking a look at the install log during iatkos setup and i have noticed an error associated with "ac_interface_power_control" flying by. I did not save the log :|

Have anybody of you tried booting vanilia macos with boot123?

What about just faking smbios? Our laptop is quite close (when it comes to specifications) to Macbook 2.1 asfaik.