Hi ddaann (Dan ?)
Look into this thread
and my postings, follow my links. I got my Thinkpad X220 (i5-2520) down to 5.4 W when idle and 7-8 h of surfing.
Not sure if you can use the latest liquorix kernel (it' for Debian, LM Main Edition/Ubuntu read this first!
) with the new patches. If yes, you need boot parameter i915... and perhaps vga=844 (like me). This reverts the power regression that was introduced with the 3.0 kernel (change of default behaviour due to bug reports).
If not use a 2.6.39 or 2.6.38 kernel with boot parameter "pcie_aspm=force", which will give you almost as low power consumption (~ +0.8 W in my case).
An idea: perhaps you may try on your 3.0 kernel parameters "pcie_aspm=force i915.i915_enable_rc6=1" together. This may be sufficient.