kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Tommy_CZ, 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, to provide another data point, could you please test for this with
the latest development release of Xubuntu (as it would be more
lighweight in comparison to Ubuntu)? ISO images are available from
http://iso.qa.ubuntu.com/qatracker/milestones/308/builds .

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>

If reproducible, could you also please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine 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:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc5

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:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

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
understanding.

** Tags added: latest-bios-01-24-2012 needs-upstream-testing regression-
potential

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

** Summary changed:

- Battery life in Ubuntu is bad on Macbook Air
+ [MacBookAir4,2] Battery life in Ubuntu is 62% of OSX

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/984406

Title:
  [MacBookAir4,2] Battery life in Ubuntu is 62% of OSX

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Hi, I use Macbook Air 4,2 and Ubuntu 12.04 64bit and I realised, that
  battery life is very bad - in it's best 5 hours.... in OSX I get about
  8 hours. What can we do with it? With mainline kernel the situation is
  even worse.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-23-generic 3.2.0-23.36
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic x86_64
  NonfreeKernelModules: wl
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu4
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: Cirrus Analog [Cirrus Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tom        1993 F.... pulseaudio
  CRDA:
   country DE:
   	(2400 - 2483 @ 40), (N/A, 20)
   	(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
   	(5250 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
   	(5470 - 5725 @ 40), (N/A, 26), DFS
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xa0600000 irq 47'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10134206,106b5b00,00100302 HDA:80862805,80860101,00100000'
     Controls      : 29
     Simple ctrls  : 9
  Date: Tue Apr 17 23:36:13 2012
  HibernationDevice: RESUME=UUID=a3db5ddc-4939-43f9-b2ae-2d7985439061
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64+mac (20120410)
  MachineType: Apple Inc. MacBookAir4,2
  ProcEnviron:
   PATH=(custom, no user)
   LANG=cs_CZ.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=422358fa-9258-47b1-8168-ea8c6b93181f ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-23-generic N/A
   linux-backports-modules-3.2.0-23-generic  N/A
   linux-firmware                            1.79
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/24/2012
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA41.88Z.0077.B0F.1201241549
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-742912EFDBEE19B3
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir4,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-742912EFDBEE19B3
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA41.88Z.0077.B0F.1201241549:bd01/24/2012:svnAppleInc.:pnMacBookAir4,2:pvr1.0:rvnAppleInc.:rnMac-742912EFDBEE19B3:rvrMacBookAir4,2:cvnAppleInc.:ct10:cvrMac-742912EFDBEE19B3:
  dmi.product.name: MacBookAir4,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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