Kernel panic advice/ Mac Pro 3.1

[doobydoooby]

Dear all,

I'm having a recurring kernel panic, once or twice a day at random times but often in the first minute or two of boot=up. I'm running High Sierra in a mac pro 3.1 under dosdudes unsupported mac process and randomly the computer will just turn off. Sometime it gives me a report, sometimes not. the main culprit seems to be:

"kext-dev-mode=1 -no_compat_check"

and the panic reports show multiple processor seizures, shown below. Any ideas where I might hunt down what's wrong? All ideas gratefully chewed upon!

*** Panic Report ***
Machine-check capabilities: 0x0000000000000806
family: 6 model: 23 stepping: 6 microcode: 1551
signature: 0x10676
Intel(R) Xeon(R) CPU E5462 @ 2.80GHz
6 error-reporting banks
Processor 0: IA32_MCG_STATUS: 0x0000000000000004
IA32_MC0_STATUS(0x401): 0xf200000410000800
IA32_MC5_STATUS(0x415): 0xf200001044100e0f
Processor 1: IA32_MCG_STATUS: 0x0000000000000004
IA32_MC0_STATUS(0x401): 0xf200000410000800
IA32_MC5_STATUS(0x415): 0xf200001040100e0f
Processor 2: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC5_STATUS(0x415): 0xb200000084200e0f
Processor 3: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC5_STATUS(0x415): 0xb200000080200e0f
mp_kdp_enter(): 7, 5, 8 TIMED-OUT WAITING FOR NMI-ACK, PROCEEDING
panic(cpu 3 caller 0xffffff801e9895da): "Machine Check at 0xffffff7fa17d3b7b, registers:\n" "CR0: 0x000000008001003b, CR2: 0x000000010eee3000, CR3: 0x00000000226dd000, CR4: 0x00000000000026e0\n" "RAX: 0x0000000000000000, RBX: 0xffffff803e409d00, RCX: 0x0000000000000001, RDX: 0xffffff7fa17f0b80\n" "RSP: 0xffffff920bb6bd60, RBP: 0xffffff920bb6bd90, RSI: 0x0000000000000001, RDI: 0xffffff7fa17e7b90\n" "R8: 0xffffff803e364000, R9: 0x0000005c3f9729e6, R10: 0x0000000000000000, R11: 0x00000000e0000000\n" "R12: 0xffffff803e85c280, R13: 0x0000000000000000, R14: 0x0000000000000148, R15: 0x0000000000000001\n" "RFL: 0x0000000000000046, RIP: 0xffffff7fa17d3b7b, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-4570.51.1/osfmk/i386/trap_native.c:168
Backtrace (CPU 3), Frame : Return Address
0xffffff801e74db20 : 0xffffff801e86e166
0xffffff801e74db70 : 0xffffff801e996714
0xffffff801e74dbb0 : 0xffffff801e988a00
0xffffff801e74dc30 : 0xffffff801e820180
0xffffff801e74dc50 : 0xffffff801e86dbdc
0xffffff801e74dd80 : 0xffffff801e86d99c
0xffffff801e74dde0 : 0xffffff801e9895da
0xffffff801e74ded0 : 0xffffff801e8209ff
0xffffff920bb6bd90 : 0xffffff7fa17ccd8f
0xffffff920bb6be60 : 0xffffff7fa17cbfe9
0xffffff920bb6bf10 : 0xffffff801e98a80c
0xffffff920bb6bf30 : 0xffffff801e88c442
0xffffff920bb6bf80 : 0xffffff801e88ca10
0xffffff920bb6bfa0 : 0xffffff801e81f4f7
Kernel Extensions in backtrace:
com.apple.driver.AppleIntelCPUPowerManagement(220.50.1)[55CD6876-8BC0-3728-8F5B-9263AD16070D]@0xffffff7fa17ca000->0xffffff7fa17f3fff

BSD process name corresponding to current thread: kernel_task
Boot args: kext-dev-mode=1 -no_compat_check

Mac OS version:
17E199

Kernel version:
Darwin Kernel Version 17.5.0: Mon Mar 5 22:24:32 PST 2018; root:xnu-4570.51.1~1/RELEASE_X86_64
Kernel UUID: 1B55340B-0B14-3026-8A47-1E139DB63DA3
Kernel slide: 0x000000001e600000
Kernel text base: 0xffffff801e800000
__HIB text base: 0xffffff801e700000
System model name: MacPro3,1 (Mac-F42C88C8)