Comment 1 for bug 977056

Thank you for your bug report, what version of Unity do you use? Quite some issues have been addressed this cycle, see i.e
https://bugs.launchpad.net/ubuntu-power-consumption/+bug/917210

The difference between 3d and 2d should be minimal in precise, rather than focussing on how to change version you should perhaps focus on the bug you hit and getting that specific issue solved, it doesn't happen to everybody for sure

How do you measure the power use?