Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I'm running Ubuntu 9.04 on relatively old laptop with ATI Mobility x600 inside. On the last version of Ubuntu, when I was able to run proprietary fglrx driver, I was able to slow down graphic card by aticonfig --set-powerstate 1 and save some battery charge. Now I forced to run open source driver as ATI decided to drop support for old cards. But I can't find a way to control power states now except relying on DynamicClocks option in xorg.conf.

But I really know better when and what powerstate I want, so is there a tool that let me change power state manually or at least let me somehow change the behavior of automatic power state selection?

share|improve this question
add comment

1 Answer 1

check the directory

/sys/class/drm/card0/power

it has several files that modify the cards power, most will have to first have the module, "radeon", loaded with dynclks=1

should be able to echo "high", "mid", "low", or "auto" into the control file and change the clock speed

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.