I'm curious whether current pm code does something on integrated cards, like mine 3200 HD? AFAIK memory clocks are fixed, so maybe some voltage drop or anything else? Difference between foss and fglrx is cca 8 watts with 2.6.32
Well i've to take a closer look if those patches are inside. For example the rework power management path (8/9) adds in Kconfig "depends on POWER_SUPPLY" which is not in my sources. But grepping after "PM_PROFILE_HIGH" or "DYNPM_ACTION_UPCLOCK" gives results.
I hope to solve my screen corruptions and freezes, that i get everytime i have a high cpu load especially combined with watching videos (xv overlay). Screen Corruptions without kms and freezes with kms. I have my power supply (which is 460watt, 18A output on 12 Volt and a Radeon X1950) in closer consideration for beeing the source of these errors.