[ltp] [Power management] DynamicClocks

Tino Keitel linux-thinkpad@linux-thinkpad.org
Tue, 12 Jul 2005 15:23:40 +0200


On Tue, Jul 12, 2005 at 15:00:17 +0200, Henrik Brix Andersen wrote:
> On Tue, 2005-07-12 at 10:26 +1200, Christopher Sawtell wrote:
> > Interesting, My R40 says this:
> > /sbin/lspci | grep ATI
> > 0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility 
> > M6 LY
> > 
> > grep -i Dynamic /var/log/Xorg.0.log
> > (**) RADEON(0): Option "DynamicClocks" "On"
> > (II) RADEON(0): Dynamic Clock Scaling Enabled
> > 
> > Very subjectively, temperature of machine on lap, it seems to be a lot cooler 
> > when the DynamicClocks are one,
> 
> Yeah, I see similar results on my X31. The GPU is much cooler when
> DynamicClocks is on, which indicates that it is indeed functioning.

I thought that DynamicClocks is the feature which is called "PowerPlay"
by ATI, and I haven't found any reference in Google that shows that
this is supported on the M6 LY. The ATI website describes PowerPlay as
a new feature of the Radeon M7 [1].

Regards,
Tino

[1] http://www.ati.com/products/MobilityRadeon7500/features.html