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[Alex Hung <1364748@xxxxxxxxxxxxxxxxxx>]

The BIOS updates are available @ http://support.lenovo.com/en/downloads/ds037576. 
The system is currently running on 1.09 which is oldest one, and 2.18 added a hybrid graphic fix (see below and http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/gluj15uc.txt), but again I do not have the required battery pack for updating the BIOS. 

<2.18>
 UEFI: 2.18 / ECP: 1.08
- (New) Added support for Hybrid Graphics on Windows 8.1 for NVIDIA graphics
        models.
        Note:
        To support this, uninstall and re-install the NVIDIA graphics driver
        after updating the UEFI BIOS from the version 1.18 or lower.

If someone in community can help comment or upload acpidump file, I can
do more analysis. If that's not the case, I would suggest to "won't fix"
this bug as it seems not affect any function.

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

** Changed in: hwe-next
     Assignee: Alex Hung (alexhung) => Anthony Wong (anthonywong)

** Changed in: linux (Ubuntu)
     Assignee: Alex Hung (alexhung) => Anthony Wong (anthonywong)

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https://bugs.launchpad.net/bugs/1364748

Title:
  [Lenovo ThinkPad T440p][10de:1290] switching  nvidia graphic card
  raises fwts high failure

Status in HWE Next Project:
  Incomplete
Status in “linux” package in Ubuntu:
  Incomplete
Status in “nvidia-prime” package in Ubuntu:
  New

Bug description:
  Lenovo ThinkPad T440p ( CID 201309-14169 ) on Ubuntu 14.04
  3.13.0-24-generic

  ----------------------------------------

  fwts high failures were found as the following:

  klog: HIGH Kernel message: [   27.371715] ACPI Warning: \_SB_.PCI0.PEG_.VID_._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95)
  klog: HIGH Kernel message: [   29.882167] ACPI Error: Field [TBF3] at 270336 exceeds Buffer [NULL] size 262144 (bits) (20131115/dsopcode-236)
  klog: HIGH Kernel message: [   29.882172] ACPI Error: Method parse/execution failed [\_SB_.PCI0.PEG_.VID_.GETB] (Node ffff8802333d1960), AE_AML_BUFFER_LIMIT (20131115/psparse-536)
  klog: HIGH Kernel message: [   29.882179] ACPI Error: Method parse/execution failed [\_SB_.PCI0.PEG_.VID_._ROM] (Node ffff8802333d1938), AE_AML_BUFFER_LIMIT (20131115/psparse-536)

  ----------------------------------------

  Steps to reproduce the bug:
  1.on the power-saving mode (intel chip),
  fwts found a klog high failure

  klog: HIGH Kernel message: [   26.704702] ACPI Warning:
  \_SB_.PCI0.PEG_.VID_._DSM: Argument #4 type mismatch - Found [Buffer],
  ACPI requires [Package] (20131115/nsarguments-95)

  by the command
  fwts -q --stdout-summary -r <log file name> klog

  2. switch to the nvidia graphic card via dash → nvidia setting → select nvidia
  3. reboot to make the switching work
  4. use the same fwts command and it will show the high failures. There are 3 more high failures found.

  reproducing rate: 5 out of 5

  ----------------------------------------

  More information:
  This high failiure

  klog: HIGH Kernel message: [   27.371715] ACPI Warning:
  \_SB_.PCI0.PEG_.VID_._DSM: Argument #4 type mismatch - Found [Buffer],
  ACPI requires [Package] (20131115/nsarguments-95)

  was explained in
  LP: #1281966/comments/4

  -----------------------------------------

  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     1790 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     1790 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Sep  3 00:15:16 2014
  HibernationDevice: RESUME=UUID=b437ec5c-4a11-4108-a4b7-900f2ea9f312
  InstallationDate: Installed on 2014-08-27 (6 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20ANZ03CUS
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=cb520008-8859-45fa-b8dd-d66a667b1be2 ro rootdelay=60 quiet splash initcall_debug
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/20/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GLET34WW (1.09.T05 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20ANZ03CUS
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGLET34WW(1.09.T05):bd08/20/2013:svnLENOVO:pn20ANZ03CUS:pvrThinkPadT440p:rvnLENOVO:rn20ANZ03CUS:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20ANZ03CUS
  dmi.product.version: ThinkPad T440p
  dmi.sys.vendor: LENOVO

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