Power management with xf86-video-ati

[Zsolt Udvari]

Hi folks,

I used xf86-video-ati-ums's features: ClockGating, ForceLowPowerMode and
DynamicPM.
Now I should remove this package and use xf86-video-ati. As I see it
doesn't have power management so my laptop's fan always works (swith on,
works some seconds, turn off, and after some seconds switch on again) and
it's annoying.
Is there any chance to use any power management? I don't use any
3D-specific things (using fluxbox, firefox, urxvt, libreoffice - and some
other small programs).

I've ATI Mobility Radeon 4570 (RV710).

Zsolt