I have installed the 64-bit kernel from http://people.canonical.com/~ogasawara/eugeni/rc6/ on my ThinkPad X220 and added the kernel parameter "i915.i915_enable_rc6=1" (RC6 was off by default). Power consumption was decreased by 25-50%, extremely roughly. I will test it for several days and then report on whether I experience glitches or freezes, as I always previously have with RC6 enabled. Fingers crossed! Thanks for your help and contributions, everyone.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/818830 Title: [Sandy Bridge] serious power regression from kernel 3.0.0-6 to 3.0.0-7 (rc6 disabled) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/818830/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
