On Sat, Nov 20, 2010 at 8:29 AM, Christoph Frieben <christoph.frieben@xxxxxxxxxxxxxx> wrote: > What's up with Radeon power management under KMS? The most recent > related entries in the kernel change log read: > > * Sun Jun 13 2010 Kyle McMartin <kyle redhat com> 2.6.34-34 > - Provide a knob to enable radeon_pm to allow users to test > Âthat functionality. Add radeon.pm=1 to your kernel cmdline > Âin order to enable it. (It still defaults to off though.) > > However, kernel option radeon.pm has no effect > Has support for this feature been discarded in Fedora kernels? These changelog entries were for 2.6.34 (f13), and I take it you're running f14+ and looking at 2.6.35. Both dynpm and radeon_pm were eliminated from 2.6.35. Radeon power management features are now controlled via sysfs. First, select a power management method, by echoing "dynpm" or "profile" to /sys/class/drm/card-0/device/power_method. It seems that dynpm can produce display artifacts, so you probably want to choose "profile" (which is the default). If you choose the profile method, then you can switch from the "default", "auto", "low", "mid", "high" profiles by echoing the relevant keyword to /sys/class/drm/card-0/device/power_profile. More info there: http://wiki.x.org/wiki/RadeonFeature Relevant commit diff: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ce8f53709bf440100cb9d31b1303291551cf517f FranÃois -- test mailing list test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/test
