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[Bug 1513886] Re: Decreased battery life after upgrade.


Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.3 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:

Once testing of the upstream kernel is complete, please mark this bug as

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.3-unstable/

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

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  Decreased battery life after upgrade.

Status in linux package in Ubuntu:

Bug description:

  In Ubuntu 15.04 I had around 7-8 hours of battery life but after
  upgrade I got half. Why? Maybe not the right package, but I don't know
  what else than the kernel. If wrong please change.

  I use lmt for increased battery life, and it is still installed (even
  reinstalled and I also tried ltp instead, but no change).

  Disabling intel p state turbo does no change. I dont really have any
  processes ruining it and it even says 4 hours after first boot.

  The battery ost 5% just while I submitted this bug report.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
   /dev/snd/controlC0:  daniel     3401 F.... pulseaudio
   /dev/snd/pcmC1D0p:   daniel     3401 F...m pulseaudio
   /dev/snd/controlC1:  daniel     3401 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Nov  6 16:46:52 2015
  HibernationDevice: RESUME=UUID=45e6f377-dcab-4fc1-a57b-5b21563164a2
  InstallationDate: Installed on 2014-11-02 (368 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Sony Corporation SVP1321M2EB
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-16-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-generic  N/A
   linux-firmware                            1.149.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to wily on 2015-10-25 (11 days ago)
  dmi.bios.date: 11/21/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: R1043V7
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR1043V7:bd11/21/2013:svnSonyCorporation:pnSVP1321M2EB:pvrC60C0754:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: SVP1321M2EB
  dmi.product.version: C60C0754
  dmi.sys.vendor: Sony Corporation

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