A Detailed Look At The ATI Linux Power Management

[nanonyme]

To easily and accurately compare the power consumption.

So summa summarum this saves power on all platforms but actual savings are only easy to determine on laptops?

[Michael]

Why must it be a laptop?

To easily and accurately compare the power consumption.

[nanonyme]

Probably because only laptops have power saving capabilities.

That's among the weirdest technical claims I've heard thus far.

[NSLW]

Why must it be a laptop?

Probably because only laptops have power saving capabilities.

[droidhacker]

No access to R600/700 laptops

Why must it be a laptop?

[Louise]

No access to R600/700 laptops

Then use an old fglrx that support R500.

[DoDoENT]

Unfortunately, as the proprietary ATI Catalyst Linux driver dropped support for the R500 ASICs -- thus the Mobility Radeon X1400 included -- we are unable to see how the power performance of the open-source driver stack now compares to the Catalyst driver that fully implements PowerPlay and other energy savings techniques.

Why not comparing the results with tests under 8.04 LTS or 8.10 with fglrx?

[bugmenot2]

Nice article, Michael!

I'd like to see some comparison with an old distribution with fglrx working. (->dynamic voltage comparison)

[Michael]

Interesting, but the video card is a bit old.

It would be nice to see the advancements with latest R600/R700 chips, expecially compared to fglrx.

No access to R600/700 laptops

[anarki2]

congrats, but you have missed the most important part: how long the battery lasts with those configurations.