MacBook Pro power savings
Matthew: Thanks for the followup and the summary of the MacBook status wrt power consumption.
I’m running a 2.6.22 kernel with the hrt patchset and a set of patches including your patch to appletouch. Your patch works great and the trackpad’s behaviour is a bit better with it.
I know pretty well what the problems are on my machine, but your summary will probably be useful to a lot of people. I know some of the issues can be fixed or worked around and others cannot.
Also note that I can get something like 3h45 out of my battery under OS X with my standard workload, which is pretty good. If OS X can do that, there’s no reason Linux can’t, however bad Apple’s choices are wrt hardware.
And to make it clear once again, my previous post didn’t criticize the C-states or anything else, but the fact that I see PowerTOP being used more as a blame shifting tool than as a debugging/profiling tool. Though I maintain that UHCI suffers from a bad design, OHCI is a much, much better spec.