Mailinglist Archive: radeonhd (93 mails)

[Alex Deucher <alexdeucher@xxxxxxxxx>]

2010/2/18 Rafał Miłecki <zajec5@xxxxxxxxx>:
> 2010/2/18 Ákos Maróy <akos@xxxxxxxx>:
> > Alex Deucher wrote:
> > > 2010/2/18 Ákos Maróy <akos@xxxxxxxx>:
> > > > Bridgman, John wrote:
> > > > > I think the selected speed appears in the xorg log.
> > > > I see.. this is what I get:
> > > >
> > > > $ grep Clock /var/log/Xorg.0.log
> > > > (II) RADEON(0): Default Engine Clock: 500000
> > >
> > > ^^^^^^^^^^
> > >
> > > engine clock is 500 Mhz.
> >
> > but I get the same reading without the ForceLowPowerMode option..
> >
> > indeed, the clock of this card is 500 MHz:
> >
> > http://www.amd.com/us/products/notebook/graphics/ati-mobility-hd-5800/Pages/hd-5830-specs.aspx
> >
> > so you're saying that without any explicit indication, the
> > ForeLowPowerMode option will make it run at half the speed..
>
> It would be good idea to implement reading current engine clock in
> radeon. There is AtomBIOS command for that.

There's no interface for reading it.  The current ddx code only sets
the default clock and default clock divided by 2 so you always know
what the clock is.  In the case of the power management options we
don't print the clock to avoid spamming the log with tons of clock
changes.

Alex
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