[ltp] Everlasting Fan

[Ovidiu Achim]

Hi,

I tried to look for it on dri-devel and xorg without success. Google
gives no hint also. It would be nice if you remember where you have
seen it.

Thanks,
Ovi


On 6/14/05, Alex Deucher <alexdeucher@gmail.com> wrote:
> On 6/14/05, Thomas Hartwig <t.hartwig.news@itth.com> wrote:
> > Hello,
> >
> > unfortunately ATI still makes no advantages on linux, so I'm wondering
> > if anybody can give some deeper help on debugging the xorg provided
> > radeon driver.
> >
> > My experiences are that the temperature of the GPU is the most biggest
> > problem related to the fan for my T40p. Typical values are:
> > CPU: 44=B0C GPU: 52=B0C HDD: 32=B0C PCI: 42=B0C. I have decided to turn=
 off the
> > fan below 50=B0C, but independent of the output of X or console the
> > temperature is always at about 50=B0C or higher for the GPU.
> >
> > The radeon driver has the nice option "DynamicClocks" which might alter
> > the power of the display. I'm wondering now if you can fine tune this i=
n
> > a better way and see what is going on. I have already taken a small loo=
k
> > into the source but I'm afraid without much time I'm not able to
> > disassemble this ;-)
>=20
> The dynamic shifting of the clocks is handled by the hardware, itself.
>  I'm not sure exactly what its algorithm is.  Pretty much all the code
> does is enable the right combination of enable dynamic clocking bits
> in the various clocks.  BTW, the code has some bugs in it that I need
> to fix at some point.  Also just to clarify, this is not powerplay.
> Powerplay is more involved and ati hasn't released the information
> needed to do it.
>=20
> > What would be helpful is: at what clock the GPU is always running and
> > what the strategy for the regulator is.
> > Is there anybody out there who might be interested in looking at or has
> > already done?
>=20
> A while back someone posted a utility (maybe on xorg, or dri-devel)
> that allowed you to statically adjust the GPU clock rate.
>=20
> >
> > Perhaps I will contact the author of the code as well.
> >
>=20
> Ati wrote the code, I just cleaned it up a bit and committed it to cvs.
>=20
> Alex
>=20
> > Best regards
> > Thomas
> >
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