power management regression in linux 3.10?

[Michael Karcher <Michael.Karcher@fu-berlin.de>]

Hello,

I am using an IBM ThinkPad T60 (i915, Core 2 Duo T7200) and recently
upgraded from a custom 3.7 kernel to a custom 3.10-rc4 kernel
(v3.10-rc4-1-gc026d8e).
After upgrading, I get around 17-20W power usage instead of 12-15W power
usage as I had with 3.7. powertop show that CPU0 is in state POLL all of
the idle time, while CPU1 correctly enters C3.

As this may be caused by my kernel configuration, I pastebinned
my .config to http://pastebin.ca/2388457. Note that I am using
CONFIG_NO_HZ_FULL, which might be nonstandard and actually not sensible
for a standard single-user laptop system with GUI.

Do you want me to try something to debug the problem?

Regards,
  Michael Karcher