AMD/ATI PowerPlay-Support in radeon(ati) or radeonHD?

[Vedran Rodic]

On Sat, Apr 5, 2008 at 2:49 PM, Vedran Rodic <vrodic at gmail.com> wrote:
> >  I've just added atombios support for the "DynamicClocks" option on
>  >  r5xx/r6xx cards to the radeon driver.  It should enable dynamic clock
>  >  gating and static power management if the chip supports it.  This is
>  >  not full powerplay support, just one aspect.  Also, the bios may set
>  >  some or all of this up at post so, YMMV.
>  >
>
>  Great, thanks.
>
>  fglrx driver is definitely doing something on rv670.  I still haven't
>  tested the power usage with "ati" driver though, but will later today.
>

Unfortunately, this option doesn't work for HD3850, it doesn't save
power. Also VT switch tends to lockup the machine, try to do it a
couple of times and it surely will. It also doesn't detect all the
video modes (higher resolutions and refresh rates). GIT version from
today, Xserver 1.4.0.90 xserver-xorg-core
(1.4.1~git20080131-1ubuntu6).