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Intel-undervolt: CPU undervolting and throttling configuration tool for Linux

(github.com)
132 points cl3misch | 3 comments | 17 Jun 24 22:44 UTC | HN request time: 0s | source
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chx ◴[18 Jun 24 01:44 UTC] No.40713262[source]▶
> my i7-8650U

those can but 10nm CPUs after Plundervolt can't undervolt , it's disabled from UEFI and not only there's no option to reenable it in the UI, the very EFI variable itself is write locked. I have an X1 Gen 4 (Intel 11th gen) and you just can't do it.

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1. hu3 ◴[18 Jun 24 14:29 UTC] No.40718273[source]▶
Not trivial but some folks (including me) HEX edit a bit or two from UFEI/Bios to reenable undervolting.
replies(1): >>40719219 #
2. chx ◴[18 Jun 24 15:49 UTC] No.40719219[source]▶
The laptop BIOS is signed.

I am not exactly unfamiliar with a hex editor but really: you can't.

replies(1): >>40720251 #
3. hu3 ◴[18 Jun 24 17:39 UTC] No.40720251[source]▶
You can disable secure boot. Then edit firmware.

So yes, you can. I did.