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[Bug 909337] Re: Power consumption significantly increased after resume from suspend


Nicolás Abel Carbone, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. 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:

where VERSION-NUMBER is the version number of the kernel you tested. For example:

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:

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

As well, please remove the tag:

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

** Tags added: needs-full-computer-model needs-upstream-testing

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

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  Power consumption significantly increased after resume from suspend

Status in The Linux Kernel:
Status in “linux” package in Ubuntu:

Bug description:
  I have a HP Envy 14 laptop with switchable graphics (not sure if this
  is related with the issue). After disabling the dedicated GPU (and
  turning it OFF) and and enabling PCIe power saving features,
  (pcie_aspm=force in grub) the idle power consumption hovers around
  14w, a little over what Windows give, but still very good.

  However, after suspending and resuming, power consumption goes up, to
  around 20w reducing battery life significantly. Discrete GPU is still
  OFF, and there is no process using the CPU.

  I am not the only one having this problem. For reference, see:


  The first one is a Acer TravelMate Timeline 8371 (without switchable
  graphics) running Ubuntu 10.04. The second one is another HP Envy,
  running Ubuntu 10.10. I am running Ubuntu 11.10 amd64 fully updated.

  I think this is a important problem and should be studied for the next
  LTS at least. If I can help with more info, I gladly will.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-14-generic 3.0.0-14.23
  ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
  Uname: Linux 3.0.0-14-generic x86_64
  NonfreeKernelModules: wl
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
   /dev/snd/controlC1:  nicolas    2591 F.... pulseaudio
   /dev/snd/controlC0:  nicolas    2591 F.... pulseaudio
  CRDA: Error: [Errno 2] No existe el archivo o el directorio
   Card hw:0 'Intel'/'HDA Intel at 0xc4500000 irq 44'
     Mixer name	: 'IDT 92HD81B1X5'
     Components	: 'HDA:111d7605,103c1436,00100402'
     Controls      : 14
     Simple ctrls  : 9
   Card hw:1 'Generic'/'HD-Audio Generic at 0xc4420000 irq 46'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100200'
     Controls      : 4
     Simple ctrls  : 1
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Wed Dec 28 08:41:46 2011
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=cad496f9-2265-42f3-9440-6badb0ccef97
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 003: ID 10f1:1a25 Importek
  MachineType: Hewlett-Packard HP ENVY 14 Notebook PC
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=936fe9a2-4f7d-4879-81ea-65810c2ac937 ro quiet splash pcie_aspm=force hybridopts=ON,IGD,OFF vt.handoff=7
   linux-restricted-modules-3.0.0-14-generic N/A
   linux-backports-modules-3.0.0-14-generic  N/A
   linux-firmware                            1.60
  SourcePackage: linux
  StagingDrivers: brcmutil mei brcmsmac
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/21/2010
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.06
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 1436
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 59.1F
  dmi.chassis.asset.tag: CNU03538DZ
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnHewlett-Packard:bvrF.06:bd07/21/2010:svnHewlett-Packard:pnHPENVY14NotebookPC:pvr0492100000241910000620000:rvnHewlett-Packard:rn1436:rvrKBCVersion59.1F:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP ENVY 14 Notebook PC
  dmi.product.version: 0492100000241910000620000
  dmi.sys.vendor: Hewlett-Packard

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