Re: [PATCH 1/1] tpm: disable hwrng for fTPM on some AMD designs

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On Fri, 28 Jul 2023 19:30:18 +0000
"Jarkko Sakkinen" <jarkko@xxxxxxxxxx> wrote:

> On Thu Jul 27, 2023 at 3:38 PM UTC, Daniil Stas wrote:
> > Hi,
> > I am still getting fTPM stutters with 6.4.3 kernel on Asus GA402RJ
> > laptop.
> > Compiling kernel without TPM support makes the stutters go away.
> > The fTPM firmware version is 0x3005700020005 on my machine.  
> 
> This is needs a bit more elaboration in order to be comprehended.
> 
> Do you mean by "stutter" unexpected delays and when do they happen?
> 
> BR, Jarkko

Yes, unexpected delays. They just happen randomly.
You can google "AMD fTPM stuttering", there are a lot of examples.
Here is one: https://www.youtube.com/watch?v=TYnRL-x6DVI



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