On Mon, Jul 11, 2011 at 11:26:32PM +0300, Pasi Kärkkäinen wrote:

Hello,

Does someone know the current status of radeon power management in Linux? and also the roadmap/todo?

I have a laptop than runs *very* hot in Linux, while it's cool in Windows, and the difference seems to be mostly about radeon graphics driver.

The default power_profile makes the laptop run *very* hot, and Linux does "thermal emergency shutdowns" pretty often.

When I change the default radeon power_profile to "mid" or "low" the temperature goes down by 10-20 degrees celsius, but it's still more hot in Linux compared to Windows.

Some bugzillas from Fedora:

"Computer becomes very hot (2011 27inch iMac)": https://bugzilla.redhat.com/show_bug.cgi?id=702953

"radeon driver default power profile causes laptop overheating": https://bugzilla.redhat.com/show_bug.cgi?id=714474

My testing is done with Fedora 14 (Linux 2.6.35) and Fedora 15 (Linux 2.6.38).

Thanks,

Any thoughts about this?

-- Pasi