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[Shuhao <shuhao@xxxxxxxxxxxx>]

I /think/ this is working. I have no observed any spikes with no_turbo
set to true after this patch.

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https://bugs.launchpad.net/bugs/1254091

Title:
  intel_pstate no_turbo patch from upstream

Status in “linux” package in Ubuntu:
  In Progress
Status in “linux” source package in Saucy:
  In Progress

Bug description:
  If you're on ubuntu_saucy and enabled intel_pstate like you should via
  the kernel boot parameter intel_pstate=enabled, you will find that the
  no_turbo setting[1] sometimes does not work.

  This is fixed in 3.12[2] and it should be backported to Saucy as it is
  a critical feature for those who experience overheating with turbo on.

  [1]: echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo
  [2]: http://comments.gmane.org/gmane.linux.power-management.general/39243

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