Hi,
Today I compiled the 2.6.9 stock kernel + Ben's suspend patch. However I am experiencing a lot of extra heet production as opposed to the 2.6.8.1 kernel. I have locked my cpu at the lowest frequency (it is fast enough), and with the 2.6.8.1 the fan was almost always off except with excessive loads. But while using the 2.9.6 the fans have to cool down my albook a lot more. I haven't made any significant change to my kernel config. I have a PowerBook5,4 running at 1,33 MHz (well 666 MHz actually).
I can confirm this on my PowerBook 5,4 1.5GHz. Although the temperature rise happened when upgrading from the debian kernel package for 2.6.7 to 2.6.8. The idle temperature goes up ~4 degrees celcius, just by booting with 2.6.8 or later instead of 2.6.7. A friend with the same model is also experiencing this.
Any ideas? /Richard -- Imendio AB, http://www.imendio.com/