Mobile and Desktop Processors
Intel® Core™ processors, Intel Atom® processors, tools, and utilities
16771 Discussions

Something keeps changing Processor Max Frequency in Windows Power Plan, is that Intel drivers?

PTwr
Beginner
334 Views

Hello,

 

I got a laptop with Ultra 9 285H and I observed weird behavior of which I am unsure if its Windows, Intel drivers, or OEM bloatware. I do not observe that on my other Intel-powered devices, but none of them is from new Ultra series.

Something constantly writes to registry keys holding "Maximum Processor Frequency" (level 0, which is "performance" cores), which prevents me from setting up an "ultra low wattage" power plan.

PTwr_0-1757192727905.png

As its executed by svchost, its annoying to pinpoint. Process has only Microsoft binaries loaded, and from stacktrace it looks like some RPC done through service for elevated privileges (those registry keys have annoying ACL where normal Admin can't edit them).


Given that the behavior is idiotic, and even includes Buffer Overflow's, I'd place my bets on OEM bloatware. But it does not hurt to ask just in case.

Is that something done by Intel drivers?

 

0 Kudos
1 Reply
PTwr
Beginner
311 Views

Here's better screenshot:

Some garbage first checks Power Settings, to figure out which registry keys hold Processor Max Frequency. Then it changes the settings for Windows default "Balanced" (381b4222....) and for my custom plan (a1dc4b4c...).

54533251-82be-4824-96c1-47b60b740d00 is Procesor directory, 75b0ae3f-bce0-45a7-8c89-c9611c25e100 is Performance Core Max Frequency, Efficiency Cores ends with 101. (Low power, ending with 102, are not changed)

PTwr_0-1757196283487.png

 

0 Kudos
Reply