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[Bug 1559923] Re: [Bug]Lenovo Yoga 260 and Carbon X1 4th gen freeze on HWP enable

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
Date: Tue, 05 Apr 2016 15:51:55 -0000
Reply-to: Bug 1559923 <1559923@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: linux (Ubuntu Wily)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1559923

Title:
  [Bug]Lenovo Yoga 260 and Carbon X1 4th gen freeze on HWP enable

Status in intel:
  New
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Wily:
  Fix Committed
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  The moment HWP is enabled by writing MSR 0x770 to 0x01, the system freezes.
  This can be reproduced on two lenovo models
  Yoga 260
  Carbon X1 4th generatio

  Bugzilla:
  https://bugzilla.kernel.org/show_bug.cgi?id=110941
  https://bugzilla.kernel.org/show_bug.cgi?id=113551
  http://forums.debian.net/viewtopic.php?f=7&t=127415

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