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[Shuhao <shuhao@xxxxxxxxxxxx>]

Sure. I'll take a look at it. My problem is that I don't actually know
how to reliably reproduce this bug yet.

Shuhao

On 11/22/2013 12:21 PM, Joseph Salisbury wrote:
> I built a saucy test kernel that has a cherry pick of commit 1ccf7a1
> from upstream.  This test kernel can be downloaded from:
> 
> http://kernel.ubuntu.com/~jsalisbury/lp1254091/
> 
> Can you test this kernel and post back if it resolves this bug?  If it
> does, I can submit an SRU request for this commit to be included in the
> stable kernels.
>

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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

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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