This patch enables PMU support for HAL on PPC machines. PMU is the power management unit found on many PPC machines (iBook G4). Using the PMU is the right way on these machines (compared to using APM emulation).
Created attachment 177473 [details, diff] patch for the ebuild to enable PMU It should be applied to hal-0.5.11-r4 from the portage tree.
+*hal-0.5.11-r5 (05 Jan 2009) + + 05 Jan 2009; <chainsaw@gentoo.org> +hal-0.5.11-r5.ebuild: + Enable PMU support for PowerPC hardware, as suggested by Christian Schmitt + <chrschmitt@gmail.com> in bug #253866.