Here are some news. I now installed 10.5.6 on my A8N-E FM/S board which is equipped with an Athlon 64 4000+, not with an Opteron. After installing your new kernal and the VoodooPower package I started the Generic Power Management Tool, but it looked the same like on the Opteron system.

After this I looked in the System Profiler which Extensios were loeded. There was NullCPUPowerManagement.kext loaded. I deleted it for testing and rebooted. Result: Kernal Panic because of VoodooPower.kext. The same happend on my Opteron system, photos are in the attachment.

I now tried to add AppleACPIThermal.kext, first to the Plugins folder inside AppleACPIPlatform.kext, then directly in extensions, but it isn't loaded in any case. I also tried blacklist=0, after this AppleHWSensor.kext is loaded on my Athlon system. The Opteron system crashes, it does a direct reboot whitout a kernel panic.

EDIT: During boot and in the Console I get the message 'cannot resolve dependencies for kernel externsion /.../AppleThermal.kext'

Could you take a look why AppleACPIThermal.kext isn't loaded in 10.5.6 anymore? Some more people have problems with hot AMD cpus, maybe this is the key. I added my complete 10.5.3 AppleACPIPlatform.kext to download here. There are some more plugins inside it.

Attached Images

	panic_athlon.jpg (221.9 KB, 5 views)
	panic_opteron.jpg (248.3 KB, 5 views)

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2 Opteron systems: OSx86 10.5.8, Andy's 9.8.0 kernel, Asus A8N-SLI Premium, Opteron 185 o'clocked @ 2 x 2,95 GHz (2nd system 2.6 GHz), ATI Radeon HD2600XT 256MB Dual-Monitor 2x HP L2035, 4 GB RAM, Griffin FireWave as main audio device, Marvell + nForce LAN, Asus U3S6 USB3/SATA6 card, 5,5 TB harddisk, Firewire 800 card, Apple Remote + eHome IR receiver, 2x Wacom serial graphics tablet, Canon Pixma iP4700, Logitech Internet Navigator wireless keyboard/mouse combination.

My Audio stuff: M-Audio Transit USB (default audio), M-Audio ProFire 610, M-Audio ProFire Lightbridge (34 channels) using Creamware A16 ADAT converter • MIDI: M-Audio Midiman 4x MIDI interface • Behringer Audio Mixers: Xenyx 1002, Xenyx 1002FX, Xenyx 1202FX, Eurorack UB1002FX, Eurorack MX1804FX, Eurorack MX262A • FX devices: Lexicon MPX100 DSP, Behringer DSP-1000 Virtualizer, Behringer MiniFEX 800 DSP, Behringer Multicom Pro MDX4400 compressor • RETRO: MSSIAH midi/sequencer/synthesizer cardridge for the C64 (Dual-SID), Steinberg M.S.I. MIDI Interface for C64