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[Bug 1452460] Re: Turbo mode on i7 is not enabled upon resume

 

Jasper, could you please test the latest upstream kernel available from
the very top line at the top of the page (the release names are
irrelevant for testing, and please do not test the daily folder)
following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results.

** Tags removed: turbo
** Tags added: latest-bios-2.12

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1452460

Title:
  Turbo mode on i7 is not enabled upon resume

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Turbo mode is not enabled upon resume from suspend.

  To enable I must issue:

  ``echo 0 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo
  echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo
  echo 0 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo``

  I would expect that Turbo was re-enabled by default from resume.

  I created a script in /usr/lib/pm-utils/sleep.d/ to issue the above
  commands, but clearly that mechanism is depreciated.

  I am reporting this bug against systemd as I assume that it is
  managing the running of startup and resume scripts.

  A quick hack solution would be appreciated in the short term.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: systemd 219-7ubuntu4
  Uname: Linux 4.0.0-040000rc7-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu May  7 09:11:12 2015
  InstallationDate: Installed on 2015-04-14 (22 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  MachineType: Acer Aspire S7-392
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.0.0-040000rc7-generic root=UUID=57b63ba3-bc33-40b5-931f-8654d6c5cab4 ro rootflags=subvol=@ noprompt persistent quiet splash vt.handoff=7
  SourcePackage: systemd
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/20/2014
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V2.12
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Storm2
  dmi.board.vendor: Acer
  dmi.board.version: V2.12
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V2.12
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.12:bd05/20/2014:svnAcer:pnAspireS7-392:pvrV2.12:rvnAcer:rnStorm2:rvrV2.12:cvnAcer:ct10:cvrV2.12:
  dmi.product.name: Aspire S7-392
  dmi.product.version: V2.12
  dmi.sys.vendor: Acer

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