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[Bug 1170836] Re: PCIe ASPM disabled while supported

 

Yes, this bug wasn't present before 11.04.

This is when kernel 2.6.38 that disabled ASPM for everyone came in, but
when this bug was solved for quite everyone, I've started seeing this
issue. Only noticed it recently, because before I was still passing
pcie_aspm=force when booting the kernel. And I still see a difference in
consumption of 2W between the two modes, going down from 14 to 12 on
idle when forcing ASPM to be enabled.

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https://bugs.launchpad.net/bugs/1170836

Title:
  PCIe ASPM disabled while supported

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I'm quite sure that my computer support PCIe ASPM (since I can force
  it to be enabled, and gain some watts on consumption), however the
  kernel disable it with this error:

  ACPI FADT declares the system doesn't support PCIe ASPM, so disable it

  I'm wondering is that could be an issue coming from this (a bit earlier in the kernel.log):
  ACPI Warning: 32/64 FACS address mismatch in FADT - two FACS tables! (20121018/tbfadt-394)
  ACPI BIOS Bug: Warning: 32/64X FACS address mismatch in FADT - 0xBB649F40/0x00000000BB64CD40, using 32 (20121018/tbfadt-521)

  I don't know what are relevant informations, so ask me if you would
  like any log or me to test anything.

  This is not something new, I have this issue for ages but never reported before.
  --- 
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  archangegabriel   1964 F.... pulseaudio
  DistroRelease: Ubuntu 13.04
  HibernationDevice: RESUME=UUID=94d188b9-7a1a-4ad4-9bf3-f6cecd5dca0e
  InstallationDate: Installed on 2012-12-16 (124 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20121216)
  MachineType: ASUSTeK Computer Inc. U43Jc
  MarkForUpload: True
  Package: linux 3.8.0.19.35
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic root=UUID=7b4efc1b-effe-4316-a61e-a12dba4f9673 ro quiet splash pcie_aspm=force
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  Tags: third-party-packages raring
  Uname: Linux 3.8.0-19-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 11/12/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 216
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: U43Jc
  dmi.board.vendor: PEGATRON CORPORATION
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: PEGATRON Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr216:bd11/12/2010:svnASUSTeKComputerInc.:pnU43Jc:pvr1.0:rvnPEGATRONCORPORATION:rnU43Jc:rvr1.0:cvnPEGATRONComputerInc.:ct10:cvr1.0:
  dmi.product.name: U43Jc
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.
  --- 
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     2757 F.... pulseaudio
  CasperVersion: 1.336ubuntu1
  DistroRelease: Ubuntu 13.10
  LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: ASUSTeK Computer Inc. U43Jc
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-12-generic N/A
   linux-backports-modules-3.11.0-12-generic  N/A
   linux-firmware                             1.116
  Tags:  saucy
  Uname: Linux 3.11.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 11/12/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 216
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: U43Jc
  dmi.board.vendor: PEGATRON CORPORATION
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: PEGATRON Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr216:bd11/12/2010:svnASUSTeKComputerInc.:pnU43Jc:pvr1.0:rvnPEGATRONCORPORATION:rnU43Jc:rvr1.0:cvnPEGATRONComputerInc.:ct10:cvr1.0:
  dmi.product.name: U43Jc
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.

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