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Can CPU PL2 be changed with an EFI application (like CFGLock)?


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@rafale77 Thanks for trying.  It's possible that I self-signed the build for local execution and that you need to build your own pciutils as I have done here.

 

EDIT: @rafale77 I haven't found evidence that there is a memory-map that configures undervolting (analogous to 0xFED159A0).  Before I experiment further, I want to verify MCHBAR for my rig.  I'm reluctant to write the memory location without confirmation.  It's a low priority for me, so it can wait.

Edited by deeveedee
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HP notified me that they are examining the HP EliteDesk 800 G5 Mini BIOS to determine why PL2 doesn't auto-increase when the power adapter is changed from 90W to 150W.  Maybe there's hope that I won't need to make any ACPI mods.

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