Re: No amdtemp sysctls, acpi errors, AMD Ryzen 5 2400G

From: Conrad Meyer <cem_at_freebsd.org>
Date: Tue, 13 Nov 2018 20:50:51 -0800
Please try r340426 :-).
On Tue, Nov 13, 2018 at 8:41 PM Conrad Meyer <cem_at_freebsd.org> wrote:
>
> You know what, I wonder if you're running into the CUR_TEMP_RANGE_SEL?
>  I.e., sometimes the CPU chooses to report on a range from 0-225C and
> sometimes -49C-206C.  I think someone else's 2990WX did the same
> thing.  I guess that patch never landed?  102°C - 49°C is the very
> reasonable 53°C.
>
> Yeah, sigh, it never landed:  https://reviews.freebsd.org/D16855
>
> Ok I'll go ahead and commit that too.
>
> Thanks,
> Conrad
> On Tue, Nov 13, 2018 at 8:38 PM Conrad Meyer <cem_at_freebsd.org> wrote:
> >
> > On Tue, Nov 13, 2018 at 8:29 PM Rebecca Cran <rebecca_at_bluestop.org> wrote:
> > >
> > > On Tuesday, 13 November 2018 21:17:59 MST Conrad Meyer wrote:
> > >
> > > > Maybe it should be -54 instead of +54?  183-(54*2) is the somewhat
> > > > plausible 75?C (still pretty warm even for load).  How good is your
> > > > cooling solution?
> > >
> > > D'oh, of course it's -54 instead of +54 (For some reason I presumed a positive
> > > offset would be *subtracted*)!   I have an all-in-one liquid thermaltake
> > > cooler installed, and under Windows it reports reaching 67C when running flat
> > > out, which doesn't seem bad.
> >
> > Yeah, 67C seems totally great at load.
> >
> > > > (The references I can find with a quick search suggest TR 29xx should
> > > > also be -27? rather than -54?C, but they may be mistaken.  183-54-27
> > > > is still 102?C ? extremely hot!)
> > >
> > > That's why I thought 54 was more likely! My 2990WX has 4 units for 32 cores
> > > instead of 2 units and 16 cores for other models, so I guessed that perhaps I
> > > should double the 27 value other people had said should be used.
> >
> > Hm, the Linux folks still use -27 for the 2990WX as well as all of the
> > other threadripper models.  I'm not sure what's right.  I wish I had
> > access to the Ryzen 2 register docs, but I don't.
> >
> > Best,
> > Conrad
Received on Wed Nov 14 2018 - 03:51:11 UTC

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